Did you visit Thirugokarnam cave temple at outskirt of Pudukkottai. It has a ffascinatinglymythology behind it.
Again NNathaliaon Trichy highway 16 k.m from pudukkottai was once a commercial centre operated by Nattukkottai cCheddarssince Silappathikaram times. Later it was a Jain centre. It was ltercontrolled by Pandiyas before Pallavas subjugated them.
You can google search for some beatiful documents . Search for "Narthamalai"
I was connected with an industry for about ten years as a Technical Consultant ('83-92')