Santiago Island is an island of the Galápagos Islands. It is also known as San Salvador, named after the first island discovered byColumbus in the Caribbean Sea (see San Salvador Island), or as James Island. The island, which consists of two overlapping volcanoes, has an area of 585 km2 and a maximum altitude of 907 meters, atop the northwestern shield volcano. The volcano in the island's southwest erupted along a linear fissure, and is much lower. The oldest lava flows on the island date back to 750,000 years ago
