Kollihills, otherwise known as Kollimalai is a small hill range situated in Western Tamilnadu. Kollihills spans across the Namakkal district of Tamilnadu. It is located at an altitude of 1300m and encompasses an area of about 280 sq.km. This small hill station is snuggled in the Eastern Ghats that extends parallel to the east coast of South India. The mountain offers sacred value due to the presence of the Arapaleeswarar temple. Besides, Kollihills is famous among the avid bike riders as 70 hairpin bends exist in high altitude terrain. The name of the mountain Kollimalai is derived from the goddess Ettukai Amman Temple. The various classical Tamil literature such as Silapathigaram, Manimekalai, Purananuru, and Akananuru have highlighted Kollihills. The hill range of Kollihills was once under the control of Valvil Ori, one of the eminent altruists of old Tamilnadu.
The hills are believed to be protected by Kollipavai whom the local people worships. Kollihills has many mythological tales related to them and more often portrayed as a mysterious place because of the little known and less travelled peaks. The important herbs are spread throughout the mountain ranges which is full of medicinal values. Semmedu village is the headquarters of Kollihills and is well connected to Namakkal and Salem in means of road. The food products such as Hill banana, pineapple, jackfruit, black pepper, coffee, orange, tapioca, and other spices have been grown in Kollihills. The jackfruit of these mountains has acquired a unique place for its fragrance and taste. Jackfruit dipped in wild honey can provide a heavenly taste.
Kollihills captivates several travellers all around the year with its serene ambience and gracefulness. It is popular among nature lovers, bike riders, trekkers, and meditation practitioners. The few towns located in the vicinity of Kollihills include Namakkal, Belukurichi, Singalandapuram, Rasipuram, Thammampatti, Mullukurichi, Koppampatty, and B Mettur. These places are linked by bus facilities. Kollihills act as an abode to several plants and wild animals where the forest is highly affluent.