Antillanca Group consists of scoria cones, maars and small stratovolcanoes. Casablanca stratovolcano is the tallest volcano of the group, which shelters the Antillanca ski resort on its west flank. Aguas Calientes and Puyehue Hot springs also form part of this volcanic group.Global Volcanism Program The complex encompasses 380 km² and to the west is bordered by the lakes Puyehue and Rupanco.
A great portion of the Antillanca Group lies within Puyehue National Park. The complex is neighbor of the volcanoes Puyehue, Cordon Caulle, Puntiagudo and Osorno.
