Global Volcanism Program | Image GVP-07253
Santa Ana's active crater contains an acidic crater lake within the SE end of a series of four nested craters. This photo is taken from the northern rim of the second youngest crater and shows an older crater floor containing several small phreatomagmatic vents that formed during historical eruptions.
Photo by Carlos Pullinger, 1996 (Servicio Nacional de Estudios Territoriales, El Salvador).
This image is made available under the Creative Commons BY-NC 4.0 license terms.
Keywords: crater | vent | stratigraphy | outcrop | geology | tephra | crater lake | gas | emissions