Kollimalai Murugan Temple Kollimalai, also known as Kolli Hills, is a mountain range located in the Namakkal district of Tamil Nadu, India, known for its rich history, spiritual significance, and lush scenic beauty. It is a prominent pilgrimage site for devotees of Lord Murugan, with several temples dedicated to the Tamil god of war, wisdom, and youth. Kollimalai Murugan temples are integral to Tamil religious culture, and they attract many devotees and tourists alike. Kollimalai Hills and ... Kolli Hills is a hill station and taluk in Namakkal district, Tamil Nadu, India. It is known for its historical significance, religious sites, forests, farming and tourism. Kolli Hills is a scenic hill station in Namakkal district with pleasant weather and trekking trails. Explore the waterfalls, caves, lake, viewpoint and tribal culture of Kolli Hills. Kollimalai Hills, also known as Kolli Malai, is a mountain range in Central Tamil Nadu with evergreen forests, medicinal plants, and ancient temples. Learn about its history, attractions, best time to visit, and how to reach this hidden treasure of the Eastern Ghats.