Kolli hills is a small mountain range located in central Tamil Nadu in Namakkal district of India. The mountains are about 1300 m in height and cover an area of approximately 280 km². The Kolli Hills has 70 hair pin 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. 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. Agaya Gangai is the famous waterfall situated near the Arappaleeswarar temple. Additionally the district administration has recently developed a botanical garden, Boat house, Cave house, New waterfalls called Masila Falls. Image Courtesy - http://commons.wikimedia.org/wiki/Main_Page