Near the coll de l'Alec and at the headwaters of the riera de Bolós.

To get there we take the forest track that leaves the C-38 road from Sant Pau de Segúries to Camprodon and heads towards Beget. On reaching the coll del Sitjar a track branches off to the left that takes us to the coll de l'Alec. Here we will leave the cars to go following the high-tension line as far as pylon 270 LR and once past it we will find a track that crosses it, we go to the left and after about 50 metres, at a crossing of tracks and under a large tree (data 2025) we will find the mouth of the pit, which because of its dimensions (5x4 metres) is easy to locate.