Directions by car (and caravan)
The classic route Calais, Amiens, Paris.... Dijon to Lyon.
or Paris - Nevers, Clermont Ferrant, Mende, Florac, through the Cévennes : a beautiful route but it is a long ride!
An excellent alternative is to go about Brussels and Reims. You drive on the quiet A26 and A5 to Langres and you reach the A31. In Lyon the choice: around (follow the signs 40 km longer) or through the city (navigation, but chance of traffic jams). After Lyon take the A7 to the south. Now there are two possibilities:
The nearest train station is in Ales. Coming from the United Kingdom with Eurostar: London - Lille - Nimes. Nimes is about 35 km from Cardet. Public transportation from the station to the site is difficult.
The nearest airport is Garons (near Nimes). E-DREAMS flies from London (Luton airport) to Garons (35 km from here)EASY JET flies from London (Gatwick) to Montpellier (80 km from here)