Sierra Negra (Galápagos)

Infobox Mountain
Name = Sierra Negra
Photo = Galapagos-Sierra Negra 2005 October 22.jpg
Caption = Eruption of Sierra Negra, 2005-10-25
Elevation = 1,490 m (4,888 ft)
Location = Isabela Island, Galápagos Islands, ECU
Coordinates = coord|0.83|S|91.17|W|type:mountain
Type=Shield volcano
Last eruption = 2005

Sierra Negra (Spanish: "Black Mountain") is the shield volcano at the southern end of Isabela Island. It contains a shallow 7×10½ km caldera that is the largest in the Galápagos Islands. Although Sierra Negra is the largest of the five major Isabela volcanoes, it has the flattest slopes, averaging less than 5 degrees and diminishing to 2 degrees near the coast. Volcán de Azufre, the largest fumarolic area in the Galápagos Islands, lies within a graben between this ridge and the west caldera wall. Sierra Negra, along with Cerro Azul and Volcán Wolf, is one of the most active of the Isabela Island volcanoes

External links

* [http://www.volcano.si.edu/world/volcano.cfm?vnum=1503-05= Smithsonian Institution's Global Volcanism Program - Sierra Negra]
* [http://www.cbsnews.com/stories/2005/10/26/ap/tech/mainD8DFMBV84.shtml CBS News: Galapagos Volcano Erupts for Third Day]