I have pinged an email to one 'SpaceshipMark' who may well be able to help you further, but he is more of a Brittany pro. Sure he'll pop in with something for you.
The caves in the Dordogne are superb, bit of info hear. Lots around Sarlat etc; http://www.northofthedordogne.com/leseyziescaves.php
I can only help with wine I'm afraid!