Kalrayan Hills forms a part of the Eastern Ghats and lies on the western side of the Kallakurichi taluk. Spreading over an area of 600 square kilometers, the it ranges from 1,000 to 3,800 foot from the sea level. The place assumed historical importance as the seat of the Vijayanagar Empire
. The Karalar tribe communities live at this place from that period onwards. The place is an actual paradise for trekkers. Summer festival is conducted every year by the District Administration.