Avenc de la Brega

From the house of la Mata, near the coll d'Estenalles, take the path in a SW direction to the coll de Garganta. From here, in a N direction, a path sets out that soon brings us to the Font Freda and continues following the whole left slope of the torrent of the same name. One reaches a fork and must follow the left one (the right one goes towards the bottom of the torrent); before crossing the torrent de la Castanyera we will find the Avenc del Tortosí and following the path, once past the aforementioned torrent, there is a flat area from which a small path sets out to the left that in a few metres brings us to the Avenc de la Brega. One of the old pit signposting signs is still preserved, indicating the possible presence of gases.

Approximate coordinates.