After a vertiginous descent by lift or on foot down to a depth of 103 metres below the ground, you take a trip in a small boat on the underground river through majestic galleries. Then the Grande Pendeloque comes into view - a giant 60 m high stalactite - which seems to hang by a thread, admiring itself in the Rain Lake. After disembarking, you take a walking tour to the Lake of Gours and the Great Dome Cavern whose vault rises 94 metres above you.
This cavern is full of concretions of all...