The entrance mouth of the cavity is accidental in nature, since everything suggests that it was opened up with the widening of the concrete track that climbs to Falgars d'en Bas.

The entrance gallery, 2 to 3 metres wide, has two small chimneys in its ceiling. A pit of 8.5 metres divided into two drops takes us to 15 metres of depth. At this point we find an elongated chamber with a NE-SW direction, its floor occupied by clay sediments and a chaos of blocks. Below there is a small network of galleries structured along NE-SW and N-S joints, down which one descends to the -32 level. It can be accessed from different points on the lower side of the chamber.

If we continue along the main gallery in a NE direction, we can observe some lithogenic processes on tilted blocks. A few metres before the end of the gallery, below the blocks a drop opens up through which we reach a lower ledge with a very decomposed ceiling. At this point a pit of 10 metres and two small drops, all of them structured along an N-S joint, take us to the -38 level. A few metres further on there is a very narrow passage with an air current.

Some lithogenic processes on tilted blocks can be observed continuing along the main gallery in a NE direction.

A pit of 8.5 metres divided into two drops takes us to 15 metres of depth. Below the chamber there is a small network of galleries structured along NE-SW and N-S joints, down which one descends to the -32 level. If we continue along the main gallery in a NE direction, a few metres before the end of the gallery, below the blocks a drop opens up through which we reach a lower ledge with a very decomposed ceiling; at this point a pit of 10 metres and two small drops, all of them structured along an N-S joint, take us to the -38 level.

The pit has 40 m of depth.

The explorers already detected visits through hammer action on part of its mineralisations. The year in which the track was made and the possible appearance of the pit are unknown.