Geographical features include the Moncodeno, an extensive natural amphitheater located on the north of the northern Grigna at an altitude of between and , characterised by the presence of a large number of sinkholes (depressions in the ground) and almost 500 caves, formed by the combined action of the karst and erosion by ice that covered the area during the ice ages. In one of these caves, the Icebox of Moncodeno, are deposits of underground ice.