Montsacopa volcano

The Olot volcanic field (also known as the Garrotxa volcanic field) occupies the NE corner of Spain south of the Pyrenees Mountains about 90 km NNE of Barcelona. The field consists of a large number of Strombolian pyroclastic cones and associated alkali basaltic lava flows, and is part of the NE Volcanic Province, which includes the Ampurdán and Selva areas to the SE. The pyroclastic cones are preferentially located at the intersection of E-W and NW-SE faults that cut sedimentary and metamorphic basement rocks. The latest dated eruption occurred during the early Holocene, and stratigraphic evidence suggests that more recent eruptions have occurred.