Avenc Gers

A collapse fissure that reaches 48 m in depth. Within the large outer fissure, a small opening between blocks gives access to a first shaft 14 metres deep. At its base, the fracture that originates the entire cavity continues towards the W, becoming impassable after a few metres. In the opposite direction there are a series of steps between the blocks that lead to some narrow galleries that close after a few metres of passage, until reaching the lowest one, where at its lowest point the maximum depth level is reached (-48).