Sierra Negra (Galápagos)
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| Sierra Negra | |
|---|---|
 Eruption of Sierra Negra, 2005-10-25 |
|
| Elevation | 1,490 m (4,888 ft) |
| Location | Isabela Island, Galápagos Islands,  Ecuador |
| Coordinates | |
| Type | Shield volcano |
| Last eruption | 2005 |
Sierra Negra 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
[edit] External links
- Smithsonian Institution's Global Volcanism Program - Sierra Negra
- CBS News: Galapagos Volcano Erupts for Third Day
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