Possible to drive through here in a motorhome, what is not recommended is doing it at night in fog like we did on the first occasion. Luckily I got tired and we just pulled over, not giving a monkeys where we were and just parked for the night expecting a bollocking from someone in the morning. We woke up to find we were joined by 2 other motorhomes and were only 100 yards away from where we wanted to be. The roads are small. it takes a lot longer than you think to get there. Seeing a church in a cave next to a road makes it worth your while and then the Clue (gorge) where you can have a little scramble if you feel up to it. Motorbike used on this one from a base at Pugets les Theniers or Entrevaux by the train station.
Lac de Castillan on the way home.
Lac de Castillan on the way home.