Inspiration for caving holidays abroad?

[Leclused]

There's a Vercors resistance museum, too. In 1944 the Vercors was the site of a premature resistance uprising by the Maquis against the Nazis. https://en.wikipedia.org/wiki/Battle_of_Vercors

In the entrance of « grotte de la luire » a résistance camp existed during WW2.

Some info: La Luire

There is also a (thick) book about the exploration of the cave.