Cerro Azul (Ecuador volcano)

A tuff cone in the summit caldera

The Cerro Azul is located on the southwestern end of the Galápagos island of Isabela. The volcano is dominated by a steep-walled caldera with a diameter of 4 x 5 km and a maximum depth of 650 meters.

The Cerro Azul is 1640 meters high, the second highest of all the volcanoes of the Galapagos Archipelago. Younger lava flows cover much of the base of the caldera. The Cerro Azul is one of the most active volcanoes in the Galapagos Islands. Known eruptions of the volcano: 1250, 1850, 1932, 1940 ( east side ), April 1943, June 1948, 1951, June 29, 1959 ( east side ) 29 January 1979 15 September to 21 October 1998 ( North and West side of the caldera, southeast flank, emissions of 110 million cubic meters of lava), 29 May to 17 June 2008 ( summit and south-eastern flank ).