Kolli Hills is a small mountain range located in central Tamil Nadu in India. The mountains are about 1000 to 1300 m in height and cover an area of approximately 280 km². The Kolli Hills has 72 hair pen bends to reach the top of the hills. The Kolli Hills are part of the Eastern Ghats, which is a mountain range that runs mostly parallel to the east coast of South India. The mountains are relatively untouched by commercial tourism and still retain their natural beauty.

Tourism: Two viewpoints - one at Seekuparai and another at Selur Nadu - are being developed to encourage tourism. As of 2007, creation of a park and formation of an approach road to the Seekuparai viewpoint were nearing completion. The government maintains a pineapple research farm where hybrid varieties are created. Research about medicinal plants is also pursued on these mountains.The government holds a tourism festival in August. Kolli Hills has been the top choice for nature lovers, hiking enthusiasts, trekking clubs and meditation practitioners among hill stations in Tamil Nadu. In comparison to other hill stations in Tamil Nadu, Kolli Hills is not commercialized, less polluted and offers unique mountain ranges. Recently, the local administration has been in full swing to create a Botanical Garden, a Boat House and giving an overall face lift to the view points.

Accommodation :

There are few Resorts/Lodges that are available. A well known resort called "Nallathambi Resorts" has been operating for the last 15 years. It is situated in the highest point of the hills and offers medium and high end budget accommodations. Recently it underwent a thorough renovation/refurbishing. Recently a new resort has been opened by name "Kolli Hill Resorts" Near the Petrol Bunk, Semmedu.It is a six swiss cottage tented accommodation with good luxury on top of a lake and so the stay will be pleasant.