We are traveling with the tour to Southern France in September. We would like to see the Lascaux ii caves, but can't find any transportation information from Sarlat to the caves. Any answers?
Can't help with Sarlat to Montignac -- but once you arrive there, the caves themselves are up in the hills and so you would need a taxi probably to get there.
We used Philippe -- http://www.allophilippetaxi.com He was great. I highly recommend him.