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Detailed guide to the caves and chasms of the province of Zaragoza, an underground catalog made after arduous and complex work by its authors, Mario Gisbert and Marcos Pastor .
In this book we will find the descriptions, topographies, maps, technical sheets and more detailed photographs of these cavities in the province of Zaragoza, such as the Sima del Ibón de Planio (Salvatierra de Esca), the Cueva de la Mora (Salvatierra de Esca), Peña Blanca Cave (Salvatierra de Esca), Caco Cave (Los Fayos), Sima de los Aines (Grisel), Sima de Rejesus (Grisel), etc ...