In Jaya TV morning news, there is a "sub-news" called "kalachuvadugal". Today morning, there was a temple and a drinking-water pond in Tiruvannamalai district was shown.
It is built by Kulothunga Chola -I about 900 years ago. Seems a linga was excavated while digging the land for the pond and hence a temple was constructed with that linga. The God is named as "Thadagapureeswarar" as the lingam was found in the process of digging the pond.
The temple was shown and it was magnificent and awesome, unfortunately with poor maintenance. But, the pond is in good condition with sweet water. The location is common to three villages/towns called Peramanallur, Madam and Anithiyur.
The hightlight of this temple is, to our interest, there are lot of kalvettus in that temple and they were also shown.
Anybody from Trivannamalai district, can say more information on this temple.