La Verna cave, Show cave in Sainte-Engrâce, France.

La Verna cave is reached through a 660-metre mined tunnel that opens into the Salle de la Verna, a chamber 250 metres across and 194 metres high with a volume of 3.6 million cubic metres. A river enters from halfway up the east wall and sinks into boulders at the base. The unconformity between Paleozoic schist and Devonian limestone is exposed in the walls.

On 13 August 1953, Georges Lépineux, Jimmy Théodor, Daniel Epelly, Michel Letrône and Georges Ballandraux found the chamber, working in two groups that met inside and inscribed their names. The find followed the 1950-51 descent of the 320-metre Lépineux shaft and the death of Marcel Loubens there on 13 August 1952. A tunnel dug for EDF from 1956 to 1960 was abandoned and later used by cavers.

The chamber is named after the La Verna Troop of Lyon scouts, whose members took part in the attempted rescue of Marcel Loubens after his fall in the Lépineux shaft in 1952. Loubens died of his injuries 36 hours later. Several members of that troop, including Daniel and Pierre Epelly, Michel Letrône and Georges Ballandraux, returned and discovered the chamber the following year.

Visitors can choose from seven different tour options, ranging from one-hour family walks to extended expeditions. The longer options require advanced caving experience and physical fitness.

The five discoverers who reached the chamber on 13 August 1953 inscribed their names on the rock, and the signatures can still be seen. The same team had set a depth record in the Lépineux shaft, which at the time was the deepest ever descended.