Global Volcanism Program | Image GVP-07338
A large erosional valley 1.3 km wide at its head cuts the eastern flank of the basaltic to basaltic-andesite Usulután volcano. It is seen here from the flanks of Chinameca volcano to its NE with the Pacific Ocean in the distance at the left. Despite its prominence, Usulután volcano has not been studied in detail.
Photo by Carlos Pullinger, 1996 (Servicio Nacional de Estudios Territoriales, El Salvador).