Izalco (ēsälˈkō) [key], volcano, 7,828 ft (2,386 m) high, W El Salvador. It was sometimes called the Lighthouse of the Pacific because it was visible to 19th-century navigators off the coast. Although it has not erupted since 1966, Izalco the volcano is still considered active. The crater was first studied in 1956 by a French expedition.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.