Santorini (Greek: Σαντορίνη, pronounced [sandoˈrini]), officially Thira (Greek: Θήρα [ˈθira]) and classic Greek Thera (English pronunciation //), is an island in the southern Aegean Sea, about 200 km (120 mi) southeast from the Greek mainland. It is the largest island of a small, circular archipelago, which bears the same name and is the remnant of a volcanic caldera. It forms the southernmost member of the Cyclades group of islands, with an area of approximately 73 km2 (28 sq mi) and a 2011 census population of 15,550. The municipality of Santorini includes the inhabited islands of Santorini and Therasia, as well as the uninhabited islands of Nea Kameni, Palaia Kameni, Aspronisi and Christiana. The total land area is 90.623 km2 (34.990 sq mi). Santorini is part of the Thira regional unit.
Santorini / Thira
Σαντορίνη / Θήρα
|Administrative region||South Aegean|
|• Mayor||Antonis Sigalas|
|• Municipality||90.69 km2 (35.02 sq mi)|
|• Municipality density||170/km2 (440/sq mi)|
|• Municipal unit||14,005|
|• Population||1,857 (2011)|
|Time zone||UTC+2 (EET)|
|• Summer (DST)||UTC+3 (EEST)|
847 00, 847 02
The island was the site of one of the largest volcanic eruptions in recorded history: the Minoan eruption (sometimes called the Thera eruption), which occurred about 3,600 years ago at the height of the Minoan civilization. The eruption left a large caldera surrounded by volcanic ash deposits hundreds of metres deep. It may have led indirectly to the collapse of the Minoan civilization on the island of Crete, 110 km (68 mi) to the south, through a gigantic tsunami. Another popular theory holds that the Thera eruption is the source of the legend of Atlantis.
It is the most active volcanic centre in the South Aegean Volcanic Arc, though what remains today is chiefly a water-filled caldera. The volcanic arc is approximately 500 km (310 mi) long and 20 to 40 km (12 to 25 mi) wide. The region first became volcanically active around 3-4 million years ago, though volcanism on Thera began around 2 million years ago with the extrusion of dacitic lavas from vents around Akrotiri.
Santorini was named by the Latin Empire in the thirteenth century, and is a reference to Saint Irene, from the name of the old cathedral in the village of Perissa – the name Santorini is a contraction of the name Santa Irini. Before then, it was known as Kallístē (Καλλίστη, "the most beautiful one"), Strongýlē (Greek: Στρογγύλη, "the circular one"), or Thēra. The name Thera was revived in the nineteenth century as the official name of the island and its main city, but the colloquial name Santorini is still in popular use.
Excavations starting in 1967 at the Akrotiri site under the late Professor Spyridon Marinatos have made Thera the best-known Minoan site outside of Crete, homeland of the culture. The island was not known as Thera at this time. Only the southern tip of a large town has been uncovered, yet it has revealed complexes of multi-level buildings, streets, and squares with remains of walls standing as high as eight metres, all entombed in the solidified ash of the famous eruption of Thera. The site was not a palace-complex as found in Crete, but neither was it a conglomeration of merchants' warehousing, as its excellent masonry and fine wall-paintings show. A loom-workshop suggests organized textile weaving for export. This Bronze Age civilization thrived between 3000 and 2000 BC, reaching its peak in the period between 2000 and 1630 BC.
Many of the houses in Akrotiri are major structures, some of them three stories high. Its streets, squares, and walls were preserved in the layers of ejecta, sometimes as tall as eight metres, indicating this was a major town. In many houses stone staircases are still intact, and they contain huge ceramic storage jars (pithoi), mills, and pottery. Noted archaeological remains found in Akrotiri are wall paintings or frescoes, which have kept their original colour well, as they were preserved under many metres of volcanic ash. The town also had a highly developed drainage system and, judging from the fine artwork, its citizens were clearly sophisticated and relatively wealthy people.
Pipes with running water and water closets found at Akrotiri are the oldest such utilities discovered. The pipes run in twin systems, indicating that Therans used both hot and cold water supplies; the origin of the hot water probably was geothermic, given the volcano's proximity. The dual pipe system, the advanced architecture, and the apparent layout of the Akrotiri find resemble Plato's description of the legendary lost city of Atlantis, according to Charles Pellegrino further indicates the Minoans as the culture which primarily inspired the Atlantis legend.
Fragmentary wall-paintings at Akrotiri lack the insistent religious or mythological content familiar in Classical Greek décor. Instead, the Minoan frescoes depict "Saffron-Gatherers", who offer their crocus-stamens to a seated lady, perhaps a goddess. Crocus has been discovered to have many medicinal values including the relief of menstrual pain. This has led many[who?] archaeologists to believe that the fresco of the saffron/crocus gatherers is a coming of age fresco dealing with female pubescence. In another house are two antelopes, painted with a kind of confident, flowing, decorative, calligraphic line, the famous fresco of a fisherman with his double strings of fish strung by their gills, and the flotilla of pleasure boats, accompanied by leaping dolphins, where ladies take their ease in the shade of light canopies, among other frescoes.
The well preserved ruins of the ancient town are often compared to the spectacular ruins at Pompeii in Italy. The canopy covering the ruins collapsed in an accident in September 2005, killing one tourist and injuring seven more. The site was closed for almost seven years while a new canopy was built. The site was re-opened in April 2012.
The oldest signs of human settlement are Late Neolithic (4th millennium BC or earlier), but c. 2000–1650 BC Akrotiri developed into one of the Aegean's major Bronze Age ports, with recovered objects that came not just from Crete, but also from Anatolia, Cyprus, Syria, and Egypt, as well as from the Dodecanese and the Greek mainland.
Dating of the Bronze Age eruptionEdit
The Minoan eruption provides a fixed point for the chronology of the second millennium BC in the Aegean, because evidence of the eruption occurs throughout the region and the site itself contains material culture from outside. The eruption occurred during the "Late Minoan IA" period at Crete and the "Late Cycladic I" period in the surrounding islands.
Archaeological evidence, based on the established chronology of Bronze Age Mediterranean cultures, dates the eruption to around 1500 BC. These dates, however, conflict with radiocarbon dating which indicates that the eruption occurred at about 1645–1600 BC. For those, and other, reasons, the date of the eruption is disputed.
Santorini remained unoccupied throughout the rest of the Bronze Age, during which time the Greeks took over Crete. At Knossos, in a LMIIIA context (14th century BC), seven Linear B texts while calling upon "all the gods" make sure to grant primacy to an elsewhere-unattested entity called qe-ra-si-ja and, once, qe-ra-si-jo. If the endings -ia[s] and -ios represent an ethnic suffix, then this means "The One From Qeras[os]". If the initial consonant were aspirated, then *Qhera- would have become "Thera-" in later Greek. "Therasia" and its ethnikon "Therasios" are both attested in later Greek; and, since -sos was itself a genitive suffix in the Aegean Sprachbund, *Qeras[os] could also shrink to *Qera. An alternate view takes qe-ra-si-ja and qe-ra-si-jo as proof of androgyny, and applies this name by similar arguments to the legendary seer, Tiresias, but these views are not mutually exclusive. If qe-ra-si-ja was an ethnikon first, then in following him/her/it the Cretans also feared whence it came.
Probably after what is called the Bronze Age collapse, Phoenicians founded a site on Thera. Herodotus reports that they called the island Callista and lived on it for eight generations. In the 9th century BC, Dorians founded the main Hellenic city on Mesa Vouno, 396 m (1,299 ft) above sea level. This group later claimed that they had named the city and the island after their leader, Theras. Today, that city is referred to as Ancient Thera.
In his Argonautica, written in Hellenistic Egypt in the 3rd century BC, Apollonius Rhodius includes an origin and sovereignty myth of Thera being given by Triton in Libya to the Greek Argonaut Euphemus, son of Poseidon, in the form of a clod of dirt. After carrying the dirt next to his heart for several days, Euphemus dreamt that he nursed the dirt with milk from his breast, and that the dirt turned into a beautiful woman with whom he had sex. The woman then told him that she was a daughter of Triton named Kalliste, and that when he threw the dirt into the sea it would grow into an island for his descendants to live on. The poem goes on to claim that the island was named Thera after Euphemus' descendant Theras, son of Autesion, the leader of a group of refugee settlers from Lemnos.
The Dorians have left a number of inscriptions incised in stone, in the vicinity of the temple of Apollo, attesting to pederastic relations between the authors and their lovers (eromenoi). These inscriptions, found by Friedrich Hiller von Gaertringen, have been thought by some archaeologists to be of a ritual, celebratory nature, because of their large size, careful construction and – in some cases – execution by craftsmen other than the authors. According to Herodotus, following a drought of seven years, Thera sent out colonists who founded a number of cities in northern Africa, including Cyrene. In the 5th century BC, Dorian Thera did not join the Delian League with Athens; and during the Peloponnesian War, Thera sided with Dorian Sparta, against Athens. The Athenians took the island during the war, but lost it again after the Battle of Aegospotami. During the Hellenistic period, the island was a major naval base for Ptolemaic Egypt.
Medieval and Ottoman periodEdit
As with other Greek territories, Thera then was ruled by the Romans. When the Roman Empire was divided, the island passed to the eastern side of the Empire which today is known as the Byzantine Empire. According to George Cedrenus, the volcano erupted again in the summer of 727, the tenth year of the reign of Leo III the Isaurian. He writes: "In the same year, in the summer, a vapour like an oven's fire boiled up for days out of the middle of the islands of Thera and Therasia from the depths of the sea, and the whole place burned like fire, little by little thickening and turning to stone, and the air seemed to be a fiery torch." This terrifying explosion was interpreted as a divine omen against the worship of religious icons and gave the Emperor Leo III the Isaurian the justification he needed to begin implementing his Iconoclasm policy.
The name "Santorini" first appears c. 1153-1154 in the work of the Muslim geographer al-Idrisi, as "Santurin", from the island's patron saint, Saint Irene. After the Fourth Crusade, it was occupied by the Duchy of Naxos which held it up to ca. 1280 when it was reconquered by Licario (the claims of earlier historians that the island had been held by Jacopo I Barozzi and his son as a fief have been refuted in the second half of the twentieth century); it was again reconquered from the Byzantines ca. 1301 by Iacopo II Barozzi, a member of the Cretan branch of the Venetian Barozzi family, whose descendant held it until it was annexed in c. 1335 by Niccolo Sanudo after various legal and military conflicts. In 1318–1331 and 1345–1360 it was raided by the Turkish principalities of Menteshe and Aydın, but did not suffer much damage. From the 15th century on, the suzerainty of the Republic of Venice over the island was recognized in a series of treaties by the Ottoman Empire, but this did not stop Ottoman raids, until it was captured by the Ottoman admiral Piyale Pasha in 1576, as part of a process of annexation of most remaining Latin possessions in the Aegean. It became part of the semi-autonomous domain of the Sultan's Jewish favourite, Joseph Nasi. Santorini retained its privileged position in the 17th century, but suffered in turn from Venetian raids during the frequent Ottoman–Venetian wars of the period, even though there were no Muslims on the island.
Santorini was captured briefly by the Russians under Alexey Orlov during the Russo-Turkish War of 1768–1774, but returned to Ottoman control after. Following the outbreak of the Greek War of Independence on the Greek mainland in March 1821, in May Santorini followed suit, although the local Catholic population had its reservations. The island became part of the fledgling Greek state, rebelled against Governor Ioannis Kapodistrias in 1831, and became definitively part of the independent Kingdom of Greece in 1832, with the Treaty of Constantinople.
The island is still home to a Catholic community and the seat of a Catholic bishopric.
World War IIEdit
During the Second World War, Santorini was occupied in 1941 by Italian forces, and in 1943 by those of the Germans. In 1944, the German and Italian garrison on Santorini was raided by a group of British Special Boat Service Commandos, killing most of its men. Five locals were later shot in reprisal, including the mayor.
The expansion of tourism in recent years has resulted in the growth of the economy and population. Santorini was ranked the world's top island by many magazines and travel sites, including the Travel+Leisure Magazine, the BBC, as well as the US News. An estimated 2 million tourists visit annually.
The island's pumice quarries have been closed since 1986, in order to preserve the caldera. In 2007, the cruise ship MS Sea Diamond ran aground and sank inside the caldera. As of 2019, Santorini is a particular draw for Asian couples who come to Santorini to have pre-wedding photos taken against the backdrop of the island's landscape.
The Cyclades are part of a metamorphic complex that is known as the Cycladic Massif. The complex formed during the Miocene and was folded and metamorphosed during the Alpine orogeny around 60 million years ago. Thera is built upon a small, non-volcanic basement that represents the former non-volcanic island, which was approximately 9 by 6 km (5.6 by 3.7 mi). The basement rock is primarily composed of metamorphosed limestone and schist, which date from the Alpine Orogeny. These non-volcanic rocks are exposed at Mikro Profititis Ilias, Mesa Vouno, the Gavrillos ridge, Pyrgos, Monolithos, and the inner side of the caldera wall between Cape Plaka and Athinios.
The metamorphic grade is a blueschist facies, which results from tectonic deformation by the subduction of the African Plate beneath the Eurasian Plate. Subduction occurred between the Oligocene and the Miocene, and the metamorphic grade represents the southernmost extent of the Cycladic blueschist belt.
Volcanism on Santorini is due to the Hellenic subduction zone southwest of Crete. The oceanic crust of the northern margin of the African Plate is being subducted under Greece and the Aegean Sea, which is thinned continental crust. The subduction compels the formation of the Hellenic arc, which includes Santorini and other volcanic centres, such as Methana, Milos, and Kos.
The island is the result of repeated sequences of shield volcano construction followed by caldera collapse. The inner coast around the caldera is a sheer precipice of more than 300 metres (980 ft) drop at its highest, and exhibits the various layers of solidified lava on top of each other, and the main towns perched on the crest. The ground then slopes outwards and downwards towards the outer perimeter, and the outer beaches are smooth and shallow. Beach sand colour depends on which geological layer is exposed; there are beaches with sand or pebbles made of solidified lava of various colours: such as the Red Beach, the Black Beach and the White Beach. The water at the darker coloured beaches is significantly warmer because the lava acts as a heat absorber.
The area of Santorini incorporates a group of islands created by volcanoes, spanning across Thera, Thirasia, Aspronisi, Palea, and Nea Kameni.
Santorini has erupted many times, with varying degrees of explosivity. There have been at least twelve large explosive eruptions, of which at least four were caldera-forming. The most famous eruption is the Minoan eruption, detailed below. Eruptive products range from basalt all the way to rhyolite, and the rhyolitic products are associated with the most explosive eruptions.
The earliest eruptions, many of which were submarine, were on the Akrotiri Peninsula, and active between 650,000 and 550,000 years ago. These are geochemically distinct from the later volcanism, as they contain amphiboles.
Over the past 360,000 years there have been two major cycles, each culminating with two caldera-forming eruptions. The cycles end when the magma evolves to a rhyolitic composition, causing the most explosive eruptions. In between the caldera-forming eruptions are a series of sub-cycles. Lava flows and small explosive eruptions build up cones, which are thought to impede the flow of magma to the surface. This allows the formation of large magma chambers, in which the magma can evolve to more silicic compositions. Once this happens, a large explosive eruption destroys the cone. The Kameni islands in the centre of the lagoon are the most recent example of a cone built by this volcano, with much of them hidden beneath the water.
The devastating volcanic eruption of Thera around 1600 B.C. has become the most famous single event in the Aegean before the fall of Troy. It may have been one of the largest volcanic eruptions on Earth in the last few thousand years, with an estimated VEI (volcanic explosivity index) of 6 according to the last studies published in 2006, confirming the prior values. The violent eruption was centred on a small island just north of the existing island of Nea Kameni in the centre of the caldera; the caldera itself was formed several hundred thousand years ago by the collapse of the centre of a circular island, caused by the emptying of the magma chamber during an eruption. It has been filled several times by ignimbrite since then, and the process repeated itself, most recently 21,000 years ago. The northern part of the caldera was refilled by the volcano, then collapsed once more during the Minoan eruption. Before the Minoan eruption, the caldera formed a nearly continuous ring with the only entrance between the tiny island of Aspronisi and Thera; the eruption destroyed the sections of the ring between Aspronisi and Therasia, and between Therasia and Thera, creating two new channels.
On Santorini, a deposit of white tephra thrown from the eruption is found lying up to 60 m (200 ft) thick, overlying the soil marking the ground level before the eruption, and forming a layer divided into three fairly distinct bands indicating different phases of the eruption. Archaeological discoveries in 2006 by a team of international scientists revealed that the Santorini event was much more massive than previously thought; it expelled 61 cubic kilometres (15 cu mi) of magma and rock into the Earth's atmosphere, compared to previous estimates of only 39 cubic kilometres (9.4 cu mi) in 1991, producing an estimated 100 cubic kilometres (24 cu mi) of tephra. Only the Mount Tambora volcanic eruption of 1815, the 181 AD eruption of Lake Taupo, and possibly Baekdu Mountain's 946 AD eruption have released more material into the atmosphere during the past 5,000 years.
Speculation on an Exodus connectionEdit
In The Parting of the Sea: How Volcanoes, Earthquakes, and Plagues Shaped the Exodus Story, geologist Barbara J. Sivertsen seeks to establish a link between the eruption of Santorini (c. 1500 BC) and the Exodus of the Israelites from Egypt in the Bible.
Other than the Bible, there is no historic evidence of any Jewish exodus from Egypt, at least not from the Egyptian sources.
A 2006 documentary film by Simcha Jacobovici, The Exodus Decoded, postulates that the eruption of the Santorini Island volcano (referred to as c. 1500 BC) caused all the biblical plagues described against Egypt. The documentary presents this date as corresponding to the time of the Biblical Moses. The film asserts that the Hyksos were the Israelites and that some of them may have originally been from Mycenae. The film also suggests that these original Mycenaean Israelites fled Egypt (which they had in fact ruled for some time) after the eruption, and went back to Mycenae. The Pharaoh of the Exodus is identified with Ahmose I. Rather than crossing the Red Sea, Jacobovici argues a marshy area in northern Egypt known as the Reed Sea would have been alternately drained and flooded by tsunamis caused by the caldera collapse, and could have been crossed during the Exodus.
Jacobovici's assertions in The Exodus Decoded have been extensively criticized by religious and other scholars. In a 2013 book on this connection, Thera and the Exodus, a dissident from the consensus Riaan Booysen, tries to support Jacobovici's theory and claims the pharaoh of the Exodus to be Amenhotep III and the biblical Moses as Crown Prince Thutmose, Amenhotep's first-born son and heir to his throne.
Speculation on an Atlantis connectionEdit
Archaeological, seismological, and vulcanological evidence has been presented linking the Atlantis myth to Santorini. Speculation suggesting that Thera/Santorini was the inspiration for Plato's Atlantis began with the excavation of Akrotiri in the 1960s, and gained increased currency as reconstructions of the island's pre-eruption shape and landscape frescos located under the ash both strongly resembled Plato's description. The possibility has been more recently popularized by television documentaries such as The History Channel programme Lost Worlds (episode "Atlantis"), the Discovery Channel's Solving History with Olly Steeds, and the BBC's Atlantis, The Evidence, which suggests that Thera is Plato's Atlantis.[non-primary source needed]
Post-Minoan eruptive activity is concentrated on the Kameni islands, in the centre of the lagoon. They have been formed since the Minoan eruption, and the first of them broke the surface of the sea in 197 BC. Nine subaerial eruptions are recorded in the historical record since that time, with the most recent ending in 1950.
In 1707 an undersea volcano breached the sea surface, forming the current centre of activity at Nea Kameni in the centre of the lagoon, and eruptions centred on it continue—the twentieth century saw three such, the last in 1950. Santorini was also struck by a devastating earthquake in 1956. Although the volcano is dormant at the present time, at the current active crater (there are several former craters on Nea Kameni), steam and carbon dioxide are given off.
Small tremors and reports of strange gaseous odours over the course of 2011 and 2012 prompted satellite radar technological analyses and these revealed the source of the symptoms; the magma chamber under the volcano was swelled by a rush of molten rock by 10 to 20 million cubic metres between January 2011 and April 2012, which also caused parts of the island's surface to rise out of the water by a reported 8 to 14 centimetres. Scientists say that the injection of molten rock was equivalent to 20 years’ worth of regular activity.
Santorini has a semi-arid climate (BSh in the Köppen climate classification) with Mediterranean characteristics. Total rainfall averages 371 mm (14.6 in) per year. In the summer season, strong winds can also be observed.
|Climate data for Santorini (1981–2010)|
|Average high °C (°F)||14
|Daily mean °C (°F)||12
|Average low °C (°F)||10
|Average precipitation mm (inches)||71
|Average precipitation days (≥ 1.0 mm)||10||9||7||4||3||0||1||0||2||4||8||11||59|
|Mean daily sunshine hours||7||7||9||11||12||13||14||13||11||9||8||6||10|
Santorini's primary industry is tourism, particularly in the summer months. Agriculture also forms part of its economy, and the island sustains a wine industry.
Because of its unique ecology and climate - and especially its volcanic ash soil - Santorini is home to unique and prized produce such as the Santorini cherry tomato.
The island remains the home of a small, but flourishing, wine industry, based on the indigenous Assyrtiko grape variety, with auxiliary cultivations of Aegean white varieties such as Athiri and Aidani and the red varieties such as Mavrotragano and Mandilaria. The vines are extremely old and resistant to phylloxera (attributed by local winemakers to the well-drained volcanic soil and its chemistry), so the vines needed no replacement during the great phylloxera epidemic of the late 19th century. In their adaptation to their habitat, such vines are planted far apart, as their principal source of moisture is dew, and they often are trained in the shape of low-spiralling baskets, with the grapes hanging inside to protect them from the winds.
The viticultural pride of the island is the sweet and strong Vinsanto (Italian: "holy wine") (Visanto), a dessert wine made from the best sun-dried Assyrtiko, Athiri, and Aidani grapes, and undergoing long barrel aging (up to twenty or twenty-five years for the top cuvées). It matures to a sweet, dark amber-orange, unctuous dessert wine that has achieved worldwide fame, possessing the standard Assyrtiko aromas of citrus and minerals, layered with overtones of nuts, raisins, figs, honey and tea.
White wines from the island are extremely dry with a strong, citrus scent and mineral and iodide salt aromas contributed by the ashy volcanic soil, whereas barrel aging gives to some of the white wines a slight frankincense aroma, much like Vinsanto. It is not easy to be a winegrower in Santorini; the hot and dry conditions give the soil a very low productivity. The yield per hectare is only 10 to 20% of the yields that are common in France or California. The island's wines are standardised and protected by the "Vinsanto" and "Santorini" OPAP designations of origin.
The present municipality of Thera (officially: "Thira", Greek: Δήμος Θήρας), which covers all settlements on the islands of Santorini and Therasia, was formed at the 2011 local government reform, by the merger of the former Oia and Thera municipalities.
The municipality of Thera includes an additional 12 local subdivisions on Santorini island: Akrotiri, Emporio, Episkopis Gonia, Exo Gonia, Imerovigli, Karterados, Megalohori, Mesaria, Pyrgos Kallistis, Thera (the seat of the municipality), Vothon, and Vourvoulos.
Towns and villagesEdit
The traditional architecture of Santorini is similar to that of the other Cyclades, with low-lying cubical houses, made of local stone and whitewashed or limewashed with various volcanic ashes used as colours. These colors, in recent years, tend to replace white in the color of house facades, according to the traditional architecture of the island as it was developed until the great earthquake of 1956. The unique characteristic is the common utilisation of the hypóskapha: extensions of houses dug sideways or downwards into the surrounding pumice. These rooms are prized because of the high insulation provided by the air-filled pumice, and are used as living quarters of unique coolness in the summer and warmth in the winter. These are premium storage space for produce, especially for wine cellaring: the Kánava wineries of Santorini.
When strong earthquakes struck the island in 1956, half the buildings were completely destroyed and a large number suffered repairable damage. The underground dwellings along the ridge overlooking the caldera, where the instability of the soil was responsible for the great extent of the damage, needed to be evacuated. Most of the population of Santorini had to emigrate to Piraeus and Athens.
During the 15th and 16th centuries the Cyclades were under threat from pirates who plundered the harvests, enslaved men and women and sold them in the slave markets. The small bays of the island were also ideal as hideouts. In response the islanders built their settlements at the highest most inaccessible points, and very close one to, or on top of, each other; while their external walls, devoid of openings, formed a protective perimeter around the village. In addition the following additional types of fortifications were built throughout the island to protect the island’s inhabitants.
- Casteli (castles), also written as kasteli, were large fortified permanent settlements. There were five on the island, Agios Nikolaos (at Oia), Akrotiri, Emborio, Pyrgos and Skaros. At the entrance to every casteli was a church dedicated to Agia (St.) Theodosia, the Protector-Saint of castles.
- Goulas (from the Turkish word koules which means ‘tower’) were the multi-storey, rectangular and the highest tower of most kastelli. There were four goulas on the island. They were used both as an observatory and as a place of refuge for the islanders. They had thick walls, parapets, an iron gate, murder holes and embrasures.
- Viglio were small coastal watchtowers, which were permanently garrisoned, from where a watch was maintained and an alarm raised when a pirate ship was sighted.
Electricity for both Santorini and Therasia is principally supplied from the Thira Autonomous Power Station which is located at Monolithos in the eastern part of Santorini. Owned by Public Power Corporation (PPC) it has diesel engine and gas turbine powered generators. The two islands have a total installed capacity of 75.09 MW of thermal generation and 0.25 MW of renewable generation. There is a programme underway at a cost of €124 million as part of the Cyclades Interconnection Project to connect the island via a submarine cable to Naxos and hence by extension to the mainland system by 2023.
A fire at the power station in Monolithos, on 13 August 2018 put it out of service, resulting in a total loss of electricity supply across the two islands. Within four days electricity had been restored to all but 10% of the islands consumers. Vessels were dispatched to carry two power generators to assist in supporting the restoration of the electricity supply.
Electricity is distributed around the island by The Hellenic Electricity Distribution System Operator (HEDNO S.A. or DEDDIE S.A.) which is a 100% owned subsidiary of PPC. A cable connects the Thirasia and Santorini electrical distribution systems.
The central bus station is in Fira, the capital of the island, where buses depart very frequently. They cover routes to almost all places around the island and to most tourist spots.
Santorini is one of the few Cyclades Islands with a major airport, which lies about 6 km (4 mi) southeast of downtown Thera. The main asphalt runway (16L-34R) is 2,125 metres (6,972 feet) in length, and the parallel taxiway was built to runway specification (16R-34L). It can accommodate Boeing 757, Boeing 737, Airbus 320 series, Avro RJ, Fokker 70, and ATR 72 aircraft. Scheduled airlines include the new Olympic Air, Aegean Airlines, Ryanair, and Sky Express, with chartered flights from other airlines during the summer, and with transportation to and from the air terminal available through buses, taxis, hotel car-pickups and rental cars.
Bus services link Fira to most parts of the island.
Santorini has two ports: Athinios (Ferry Port) and Skala (Old Port). Cruise ships anchor off Skala and passengers are transferred by local boatmen to shore at Skala where Fira is accessed by cable car, on foot or by donkeys and mules. Tour boats depart from Skala for Nea Kameni and other Santorini destinations.
Water and sewerageEdit
As the island lies in a rain shadow between the mountains of Crete and the Peloponnese water seems to have been scarce at least from post-eruption times.  This, combined with the small size of the island, the lack of rivers and the nature of the soil, which is largely composed of volcanic ash, as well as the high summer temperatures meant that there was very little surface water. With only one spring (Zoodochos Pigi – the Life-giving Spring) this encouraged the practice of diverting any rain that fell on roofs and courtyards to elaborate underground cisterns, supplemented in the 20th century with water imported from other areas of Greece. Due to the lack of water islanders developed non-irrigated crops such as vines and olives that could survive on only the scant moisture provided by the common, early morning fog condensing on the ground as dew.
Many cisterns ceased to be used following the 1956 earthquake. As tourism increased, the existing rainwater harvesting methods proved incapable of supplying the increased demand. As a result it has become necessary to construct desalination plants which now provide running, yet non-potable water to most residents. This has led to many of the historic cisterns falling into disrepair.
The first desalination plant was built at Oia following a donation in 1992 by Oia born businessman Aristeidis Alafouzos. By 2003 the plant had expanded to house three desalination units (of which two had been donated by Alafouzos). As of 2020 the plant has six desalination units with a total capacity of 2,800 m³ per day. sup> In addition to Oia there are currently desalination plants at Aghia Paraskevi, located on the southwest side of the airport with a capacity of 5,000 m³ per day which supplies Kamari, Vothonas, Messaria, Exo Gonia, Mesa Gonia, Agia Paraskevi and Monolithos; Fira with a capacity of 1,200 m³ per day; Akrotiri (also known as the Cape) which has two units with a total capacity of 650 m³ per day; Exo Gialos which has two units with a total capacity of 2,000 m³ per day which supplies Fira, Imerovigli, Karteradou, Pyrgos, Megalochori and Vourvoulou; and Therasia which has two TEMAK units with a total capacity of 350 m³ per day
There are also a number of small autonomous drinking water production units with a capacity of 6 m³ per day located at Kamari, Emporio, Messaria and Thirasia Island.
The provision of water supply and sewage treatment and disposal on both Santorini and Therasia Islands is undertaken by the municipally owned DEYA Thiras. It was founded in May 2011, after the merging of the Municipal Water Supply and Sewerage Company of Thera (DEYA Thera) and the Community Water Supply and Sewerage Company of Oia (K .Ε.Υ.Α. Οίας). Known as DEYATH it is responsible for the planning, construction, management, operation and maintenance of the water supply system (desalination plants and pumping wells), irrigation, drainage, and the wastewater collection networks and treatment plants for the islands of Thira (Santorini) and Therasia. The Loulas and Evangelos Nomikos Foundation has funded a number of projects aimed at improving the water supply and sewage systems on the islands.
In popular cultureEdit
The 2018 video game Assassin's Creed Odyssey features a DLC extra entitled Fate of Atlantis, in which a gateway to the mythical lost city of Atlantis is located in a temple beneath the island of Thera. 
In Sonic Unleashed, the first levels and hub world you go to took place in Apotos, which is based on Santorini.
Scala Ad Caelum, which is one of the worlds in the Kingdom Hearts series seen in Kingdom Hearts III and Kingdom Hearts Dark Road, used Santorini as inspiration for the city's ascetic theming and look.
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