Veerasigmani Cave Temple & Jain Beds
There were about 8-9 Jain beds with inscription on one of them. I was told that there's another set with a Vishnu Padam (later addition) on the other side of hill which sadly I couldn't access...
Coming up with more places, esp. more caves soon. Wait n watch!!!
TO GET THERE:
64 km from Tirunelveli Railway Station
30 km from Tenkasi
Tirunelveli has hotels in all price points.
You could also consider staying at Coutrallam.