Cova-avenc de la Troneda

Visited by Rafael Amat i Carreras on 30 March 1923 during his first campaign in the Garraf massif. For more than 60 years it remained unlocatable, despite its mention appearing in all the Garraf catalogues. Around 1986 or 1987, a small group of young people from Begues (embryonic group of the Begues Espeleo Club), rediscovered it without knowing which cave it was. They reported the find to Lluís Muntan, who located it and whose daughter Elena explored it partially, realising that it was the same cavity mentioned by Amat i Carreras. In 1989, the young people from Begues accompanied some members of GIRES, who explored and surveyed it, publishing the record in the Club's magazine, without giving any reference to its location and giving it the name Forat de Masferrer, making it an unknown cavity. With the references provided by Muntan, in March 2009, F.Rubinat and JM.Miñarro located it and visited it partially, confirming that it was the same cavity.