Avenc de l'Alba

The entrance, in the form of a fissure, descends down a steep slope to reach a crawlway through which one enters the interior of the cavity. Once inside, the descending gallery leads to a narrow passage, which once passed places us at the upper part of a pit that can be descended without the need for equipment. At the bottom a flat-out passage gives way to a rounded little chamber that connects with another lower one. In the direction opposite the flat-out passage, a gallery leads to a small chamber from which another descending gallery emerges, leading to another lower room where the deepest point of the cavity is found at -25 metres. From the descending gallery, one can climb up a chimney that reaches a room with many concretions, and following the same gallery covered with blocks, one reaches a narrow passage where there is a pit that is obstructed; to the right of this last narrow passage we find an ascending crawlway that leads us to the foot of a chimney. At the top of a small chamber, already near the surface, a descending fissure starts that brings us back to the first entrance pit.

A room with many concretions.