It has two entrances of low height, one of them divided in two by a block; a few metres from the entrance, on the left, the gallery is choked by blocks, but on the right it joins with the passage coming from the other entrance, forming a single gallery, of steep gradient, muddy floor and notable dimensions. This main stretch of the gallery is about 50 metres long and at the midpoint of its course it undergoes a widening due to the confluence of an ascending passage which after a few metres becomes impassable because of the low height of the ceiling, and which is possibly the final stretch of the gallery choked near the entrance. From the end point of the main gallery, this continues through a passage of much smaller dimensions, which after some small muddy steps, ends in a very narrow point choked by sediments.