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.
The Moncodeno is a significant geographical feature located on the northern side of the Grigna mountain range at an altitude between  and . This amphitheater is notable for its numerous sinkholes and nearly 500 caves, which were formed by the combined effects of karst processes and glacial erosion during the Ice Age.