Kilmavilangai is a village near Tindivanam in Viluppuram district    of Tamilnadu.

A cave temple is located on outskirts of this village. This cave is excavated on a small boulder which looks like low outcrop in middle of the fields. On the eastern face of this outcrop, is carved in a single cell. The total cut in measures about 4.5 feet by 5.5 feet, the cell within is about 2.5 feet by 5 feet and about 3 feet deep.This way we get two jambs, one on each side of the entrance. On these lean jambs are carved two dvarpalas. 

Inside the cell is a relief sculpture of Vishnu. He is standing in sambhaga posture, with four hands. In his upper right hand is a chakra (discus) and in his upper left hand  is a shankha (conch). His lower left hand is on his waist and lower right hand is in abhaya mudra. He is wearing a long kirita-makuta, makara-kunadalas in his ears, bracelets on his arms, and a yajnopavita. 

Source:

http://puratattva.in/2010/11/04/kilmavilangai-i-stand-here-for-eternity-29.html   

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