Usulután volcano (right), at the SE end of a cluster of stratovolcanoes west of San Miguel volcano, has an eroded summit crater, but youthful flows are present on its southern flanks. La Manita (left) a small cone to the NE of Usulután on the flank of El Tigre volcano has also been mapped as Holocene in age, along with Cerro Nanzal, a pyroclastic cone on the SE flank of Usulután. No historical eruptions are known from Usulután.

Photo by Kristal Dorion, 1994 (U.S. Geological Survey).

Usulután