At kilometre 20.6 of the road from Berga to Sant Llorenç de Morunys (LV4241), a road branches off to the right leading to Sisquer. From here, now on a track, and one kilometre further on, you must leave the turn-off to Montcalb and turn left (signpost: Cal Vallonga, Molí de la Corriu, Pont Cabradís). A little more than 5.5 kilometres further on there is a turn-off leading to the molí de la Corriu, where we find the upper end of the first of the two small reservoirs that were built on the Aigua de Valls river. You must continue straight on for about 900 metres and you reach the end of the track, the point where a small path begins that follows the left bank of the river, crossing the Torrent Fondo, which appears on the right, until reaching a quarter of an hour later a small flat area among the woods, where a small spring rises together with other small springs that form streams. We are situated above the Pont Cabradís. To reach the lower mouth you must follow the path to the left (direction S) for about twenty metres through the middle of the woods and go down the right bank by a very steep little path, which allows you to overcome the 30 metres of drop to the river bed.

If we want to reach the upper mouth from the outside, it is a little more complicated, since it opens in a gorge section of the river and a delicate downclimb would be required. The simplest is to follow a faint path about 200 metres to the north, parallel to the river and upstream, to a point where this little path begins to descend gently and reaches the level of the Aigua de Valls. You only have to turn downstream along the interior of the ravine, getting your feet wet and retracing the distance you had covered on the outside, until you go into the cave. Very approximate coordinates.