The author rope down the highest rappel (40 meters) in the remote Barranco de Las Brujas (Sorceress Gulch). The trip begining at the strange rock formation called "Las Capillas" (The Strakes). This canyon contains a big rappel into a secret chamber (the photo) and two interesting "estrechos". The upper part of the canyon starting in limestone formation. The lower part is in conglomerate formation and exit at the Rio Usuala opposite to the arrival of Barranco Cueva Cabrito . Sierra de Guara Regional Park, Spanish Pyrenees.