San José Volcano is the stratovolcano that gives its name to a massive volcanic group, at about 90 km from Santiago de Chile at the end of the Cajón del Maipo on the Chile-Argentina border. It lies on the south end of an approximately 10 km x 5 km complex that includes the La Engorda, Espiritu Santo, Plantat and Marmolejo volcanoes, the latter of which is located on the Northern end of the group.