The Cave That Gives the Village Its Name Nature · Cueva de Ágreda, Moncayo, Soria Image of Cueva de Ágreda, not of the place itself. Madoz's dictionary described in the municipal district a cavity whose entrance chamber measured some fifty feet and in which mineral-laden water had formed columns and fanciful shapes. Photo: Xufanc (CC BY-SA 3.0) What to see and do in Cueva de Ágreda