Chulamanipanma Vihare of Nagapattinam, Tamil Nadu

[podalangai]

I thought, Buddhism , Jainism were wiped out of TN after Chola dynasty ?

No

Jainism was never wiped out - there's still a small community of Tamil Jains (Samanar) in northern TN, especially in the Thanjavur area. My grandfather's neighbours in my mother's native village (near Thanjavur) are Samanar.

Buddhism was long thought to have disappeared during the Chola period, but archaeological work done in the late part of the 20th century has shown that it survived until at least the close of the seventeenth century. After that, it disappeared for reasons we don't know.