FSX/Prepar3D Scenery--Isla Socorro (MM81), Mexico. 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. The size is 16.5 by 11.5 km, with an area of 132 sq km. It is the largest of the four islands of the Revillagigedo Archipelago. Photo-terrain area improved with Autogen files. Includes a friendly auto-install and pics inside. By Fernando Angel Gonzalez.