Cerro Azul volcano a basaltic shield volcano on the SW part of Isabela Island in the Galápagos Islands. It has the same name as Cerro Azul volcano in Chile, meaning "Blue Mountain" in Spanish.
Cerro Azul is one of the most active volcanoes of ... [more]
The Fernandina caldera seen on July 4, 1968, about three weeks after a major explosive eruption that was followed by collapse of the caldera floor. Collapse occurred incrementally and asymmetrically, ranging up to about 350 m at the SE end of the caldera, which contains the caldera lake. Photo by Tom Simkin, 1968 (Smithsonian Institution).
Sierra Negra is one of the largest and most active volcanoes in the Galapagos Islands. A typical shield volcano, it has an oval caldera, which measures 9 km east-west and 7 km north-south. It has produced at least 10 eruptions in historical times, with an average resting period o... [more]