Architectural
structure & vocabularyThe rock-cut temple houses high-relief sculptures of Vinayaka, a Śiva liṅga, and a third figure that may be Ardhanareeswara or Harihara. The Vinayaka is taken erroneously as the main deity. To the west of Vinayaka a mandapa ends in the Śiva liṅga that is the true main deity, facing east, named Tiru Eengaikudi Mahadeva, Eengaikudi being the old name of Pillaiyarpatti. The present arrangement lets one face the Vinayaka shrine at the entrance, since the cave is hard for many to enter, and so hides the shrines of Śiva and Ardhanareeswara.
The Vinayaka relief is unlike later forms. He has only two hands, the modak in the right and the left on his hip, his trunk turned right (valampuri). He wears no sacred thread, carries holy ash on forehead and hands, wears a waist belt and a crown, and his left tusk is broken. Later additions include shrines of Nataraja, Sivakami, Karthikeya with Valli and Devayanai, Bairava and the Navagraha, with a pond, colourful gopurams and frescoed mandapas before the rock-cut temple, which stands behind.