[citation needed] The Kolli Hills are featured in several works of classical Tamil literature such as Silappathigaram, Manimekalai, Purananuru and Akananuru.

Mahavidwan R. Raghava Iyengar in the research monograph Araichi Katturaigal has given exhaustive references to Kollipavai from early Sangam literature, concluding that the image is in Kolli Hills.

E. D. Israel Oliver King of MS Swaminathan Research Foundation has documented over 250 sacred forests in Kolli Hills in the year 2005.

BSNL (earlier DOT) established the first Telecommunication networks (LDPCO) in 1977 and afterwards the Telecom facilities are continuously expanded depending upon the requirements at Kolli hills.

Farm products of the mountain ranges include black pepper, jackfruit, banana, pineapple, Oranges, Tapioca, and other spices.

[citation needed] There is also a temple for Ettukai Amman or Kolli Pavai which is one of the oldest in the town and the place itself derives its name.

Following are the few Towns surrounding the Kolli Hills: Namakkal, Kalappanaickenpatti, Belukuruchi, Sendamangalam, Rasipuram, Namagiripettai, Thammampatti, Mullukkurichi, Vairichettipalayam, Thuraiyur, Puliancholai, Thathaiyangarpet, Pasarikombai and all these places are well connected by bus services.

Kolli hills is said to have the largest expanse of evergreen or shola forest cover anywhere in the entire Southern part of the Eastern Ghats.

[3] Wildlife such as the sloth bear, barking deer,[specify] slender loris,[specify] Indian pangolin, jackals,[specify] mongoose,[specify] palm civet,[specify] and many reptiles including endemic species like the lizards Draco dussumieri, Varanus bengalensis, Calotes calotes, and rare, non venomous snake of the family Uropeltidae including the recently discovered Uropeltis rajendrani, Rhinophis goweri, the endangered Python molurus and a number of birds such as Crested Serpent Eagle, Indian Grey Hornbill, laughing thrush are found in Kolli Hills.