Dear Haider, thank you for your Response..... actually Ajanta-Ellora and most of the other famous caves of India are Man-made rock cut caves, while Iam looking for Geological formationsss
This web site, (below), was put up on the web - but after your quest for information. Take a look. Follow up by doing further searchs on key names, locations in the article. India is not known to have good limestone, or many caves ... but it appears that you have at least one long one now at 30-km.
It might help, if you add, "NSS" to your "caves/India" search string. NSS stands the United State's "National Speleological Society". You should get a couple further leads this way.