So far only the cave of 1 001 nights is fully open to the public. The sequence of narrow chambers has a variety of geological formations of remarkable delicacy and very striking colours: calcite white, red, orange, delicate pink with iron traces. In the galerie de l’Amitié, this magical quality is accentuated by the smooth reflection in its pools (“gours”). Finally a 28m-high balcony overlooks a chasm with cascading water.