Akkadō (安家洞), located in Iwaizumi, Iwate Prefecture in the Tōhoku region of northern Japan, is the longest limestone cavern in Japan, with a measured length of 23,702 metres (77,762 ft).[1] The cave system was designated as a Natural monument by the Japanese government in 1980. Since 1991, a portion of the caverns have been open to the public for part of the year.
| Akkadō | |
|---|---|
| 安家洞 | |
 Inside the Akkadō | |
  | |
| Location | Iwaizumi, Iwate Prefecture, Japan |
| Coordinates | 39°59′1.1″N 141°44′10.05″E / 39.983639°N 141.7361250°E |
| Depth | 280 meters |
| Length | 23,702 meters |
| Geology | limestone |
| Access | public |
| Show cave length | 700 meters |
| Website | Official website |
Outline edit
There are flowstones and a subterranean lake.
Access edit
- Iwaizumi Town Bus
- From/to Iwaizumibashi
References edit
- ^ [1] Archived 2012-07-09 at the Wayback Machine Journey to the Center of the Earth
External links edit
Media related to Akkado at Wikimedia Commons
- A Trip to Iwate Archived 2018-01-17 at the Wayback Machine
- Japan Travel Guide
- Morioka-Hachimantai Tourist Advisor
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