Radar Image of Galapagos Islands – January 7th, 2009
This radar image of the Galapagos Islands gives us a fine look at the various volcanoes on the islands of Isabela and Fernandina (lower left). If you open the full image, you will see what looks like a third island to the South. This is actually the southernmost part of the seahorse-shaped Isabela Island, which hooks around and becomes partially out of sight.
Isabela Island is the largest island of the Galápagos with an area of 4,640 km²,and length of 80 miles (100km).
Approximately 1 million years old, Isabela was formed by the merger of 6 shield volcanoes – Alcedo, Cerro Azul, Darwin, Ecuador, Sierra Negra and Wolf. All of these volcanoes except Ecuador are still active, making it one of the most volcanically active places on earth.
The four volcanoes visible on Isabela Island in our full image are, from top to bottom, Wolf, Darwin, Alcedo and Cerro Azul.
Fernandina Island (formerly known in English as Narborough Island), on the other hand, is the third largest, and youngest, island of the Galápagos Islands.
Fernandina has an area of 642 km² and a height of 1,476 meters (4,842 feet), with a summit caldera about 6.5 km wide. The island is an active shield volcano that last erupted on May 13, 2005. Fernandina’s only volcano, La Cumbre, is easily identifiable in our image.