This is L- shaped temple has two shrines, one for Durga (Kolaramma) and the other for Saptamatras. Kolaramma temple is a rare tantric temple in which some of the ancient tantric rituals are depicted. A rare memorial to a learned woman scholar has been found in Kolar. Both have a common vestibule.
The Durga Shrine has a wagon roof tower. The stucco figures in the saptamatras shrine are unusually large. The temple is of Dravida Vimana Style built in Ganga Tradition(11 century-A.D). Mahadwara has imposing pavilions in the inner side. The temple contains several Chola inscriptions. The earliest belonging to Rajendra-I (1012-1045 A.D).
Most outstanding example of plastic art in the Kolaramma temple is the slab depicting a battle scene, now placed on the front platform of the entrance. It is a Viragal (heroic stone) probably belonging to Ganga period measuring 41/2 feet. The slab is covered with relief work of horses, elephants, soldiers, celestial nymphs and celestial cars.