Socorro Island

Coordinates: 18°47′04″N 110°58′30″W / 18.78444°N 110.975°W / 18.78444; -110.975 Socorro Island (Spanish: Isla Socorro) is a small volcanic island in the Revillagigedo Islands, a Mexican possession lying some 600 kilometers off the country's western coast at 18°48'N, 110°59'W. The size is 16.5 by 11.5 km, with an area of 132 km². It is the largest of the four islands of the Revillagigedo Archipelago.