Lac de la Pluie

After an extraordinary boat journey along the Rivière Plane, the vault rises, the walls move further apart, and the Lac de la Pluie appears… This area of constant seepage is an unbelievable, unique vision. The ceiling is thinner and more fissured, so it lets in raindrops from ground level that constantly replenish this underground lake.

The raindrops carry dissolved limestone, which they deposit in the form of stalactites that, over the centuries, have come to form spectacular decorations.

Just above, the Grande Pendeloque (Great Chandelier), a 60-m-long series of calcite formations, hangs in mid-air, as though it were the set piece for an unusual theatre.