A first 5-metre drop places us at the start of a narrow laminador (the most awkward passage of the whole cavity), which gives way to a fairly wide 14-metre pit. Just about 4 metres below the laminador there is a bottomless meander that, after passing a window, places us at the start of the so-called “Via A”. We reach a small chamber and continue through a passage made between columns and flowstone, leading to a bell-shaped 7 m pit, with a very narrow base; half a metre from the floor the continuation is found in a 13 m pit, the base of which communicates with “Via B” by means of two wide portals. From here a pronounced meander of comfortable progression exits until reaching a 3-metre drop. Below the meander there is a narrow and long crawlway obstructed at some points by wood and stones. The base of the 3-metre drop gives way to a 5-metre pit; 3 metres from the floor a narrow passage gives access to a conduit that leads to the head of the final pit (represented in the sketch on the survey). The continuation follows a modest meander on a pronounced slope that places us in a wide 9-metre pit. The long base of this gives us two continuations: on one hand, an easy crawlway leads us back to “Via B” a few metres from its end. The most feasible and wide one places us at a window halfway down a pit and 12 metres from its base, where two large blocks hide a short drop where -83 metres is reached.

Located again at the entrance of the cavity and having descended the 14-metre pit we are at “Via B”, we reach the dome of a stepped pit easily downclimbable; at the base we find the junction with the other Via; at one end a short narrow passage opens that leads us to an inclined pit, which links with a beautiful P-6 followed by a P-7 and a P-17 of cylindrical forms; at the base of this last pit we find a meander of reduced section that leads us to a 3-metre drop, which places us in an elongated chamber where two vertical continuations open; through the wider one we descend a 5-metre pit where we find two small chambers of little importance and some crawlways that end obstructed. Through the other continuation, a drop of a few metres gives onto a low passage, behind which begins an ascending gallery that ends up becoming impenetrable.

Passage made between columns and flowstone. The base of the 3-metre drop is on a large flowstone.

The base of the 3-metre drop is usually covered with water.

Interesting pit 83 metres deep in the municipality of Vallirana.