Kolli Hills or Kolli Malai is a small mountain range located in central Tamil Nadu. Kolli Hills are featured in several works of classical Tamil literature such as Silappathigaram, Manimekalai, Purananuru and Ainkurnuru. The region was ruled by Valvil Ori around 200 A.D., who is praised as one of the seven great philanthropists of ancient Tamil Nadu. His valor and marksmanship are sung by several poets, and his exploits are a popular part of folklore. 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 sq km. 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.