There are at least three car parks in Montignac, and many roads leading in; use car or bus to get there.
There are quite a few roads through Montignac; at least a quarter are pedestrianized, so it is mostly best to walk. If you are driving, be aware that the town operates a one way system.
There are several shops, and, of course, the busy market place. It really is very busy on market days, so be careful where you walk (and what you buy of course). Beside the tourist office and the ticket office for Lascaux's Cave II there is an exhibition area selling local goods and produce and along near the main car park is another building that specialises in selling goods from South American, African and Asians countries.
Several restaurants are existant around the town, with good French food.