At their southern end, the Eastern Ghats form several ranges of low hills. The southernmost of the Eastern Ghats are the low Sirumalai and Karanthamalai Hills of southern Tamil Nadu. North of the River Kaveri are higher Kollimalai, Pachaimalai, Shevaroy (Servaroyan), Kalrayan Hills, Chitteri, Palamalai and Mettur Hills in northern Tamil Nadu state. The climate of the higher hill ranges is generally cooler and wetter than the surrounding plains and the hills are home to coffee plantations and enclaves of dry forest. The hill station of Yercaud is located in the Shevaroy Hills. The Bilgiri Hills, which run east from the Western Ghats to the River Kaveri, forms a forested ecological corridor that connects the Eastern and Western Ghats, and allows the second-largest wild elephant population in India to range between the South Eastern Ghats, the Biligiri and Nilgiri Hills, and the South Western Ghats.The famous temple Malai Mahadeshwara Hills Temple is situauted in Chamarajanagar District in the Karnataka state on the Eastern Ghat.
The Ponnaiyar and Palar Rivers flow from headwaters on the Kolar Plateau eastward through gaps in the Ghats to empty into the Bay of Bengal; the Javadi Hills lie between the two rivers. There are waterfalls in remote areas, such as the Kiliyur Falls.
North of the Palar River in Andhra Pradesh, the central portion of the Eastern Ghats consist of two parallel ranges running approximately north-south; the lower Velikonda Range lies to the east, and the higher Palikonda-Lankamalla-Nallamalla Ranges lie to the west. The Palar River cuts through the ranges. The Velikonda Range eventually descends to the coastal plain in northern Nellore district, while the Nallamalla Range continues to the River Krishna. A range of low hills lie between the Krishna and the Godavari, but north of the Godavari the Eastern Ghats increase again in height, forming the boundary between Andhra Pradesh and Odisha. The Similipal Massif is considered the farthest northeast extension of the Eastern Ghats.
The highest mountain peak in the state of Odisha is Deomali (1672 m), which is situated in Koraput district in southern Odisha. It is also the tallest peak of the Eastern Ghats. It is part of the Chandragiri-Pottangi mountain system.The region covers about three-fourth of the entire Odisha State. Geologically it is a part of the Indian Peninsula which was a part of the ancient landmass of Gondwanaland. The major rivers of Odisha with their tributaries have cut deep and narrow valleys. This region mostly comprises the hills and mountains of the Eastern Ghats which rise abruptly and steeply in the east and slope gently to a dissected plateau in the west running from north-west (Mayurbhanj) to south-west (Malkangiri). The Odisha highlands are also known as the Garhjat Hills. This region is well marked by a number of interfluves or watersheds. The Eastern Ghats is interrupted by a number of broad and narrow river valleys and flood plains. The average height of this region is about 900 metres above the mean seal level.