References: pers comm.; GEISC/R and CAEAP, 1986 (survey); Muñoz E, 1988; Ruiz Cobo Jesús and Muñoz Fernández Emilio et al, 2009 (survey and photo); Smith Peter, 2012 (survey, photo); Gutiérez Cuenca Enrique and Hierro Gárate José Ángel, 2012; Hierro Gárate José Ángel y Gutiérrez Cuenca Enrique, 2016a
Entrance picture : yes
Underground picture(s): near entrance at entrance
Detailed Survey : from GEISC/R and CAEAP, 1986
Line Survey :
On area survey :
Survex file :