Antonio Castillo Martín, hydrogeologist from the CSIC and the University of Granada, is the author, together with David Oya, of a book about the stories of what he calls the Sierra del Agua, which is that of Cazorla, Segura and surrounding areas. He also directs the project 'Get to know the sources', an online catalog of all Andalusian sources and springs. Castillo Martín says that more attention must be paid to underground reservoirs, on whose good health supplies and most of the aquatic ecosystems of Andalusia will depend in the future. For him, we need to make use of them under sustainable economic and environmental management. Interview in the 
Diario Sevilla