Global Volcanism Program | Image GVP-11553
The summit crater complex of Santa Ana volcano with its small light-bluish crater lake is visible at the left-center in this false color NASA ASTER image (with north to the top). The dramatic lake-filled Coatepeque caldera cuts the eastern side of the Santa Ana massif, and Izalco volcano and its historical lava flows lie south of Santa Ana. A NW-SE-trending fissure cutting across the massif was the source of an eruption in 1722 CE from a cinder cone (center) on the SE flank that fed the lava flow seen extending across the image to the lower right.
NASA ASTER image, 2001 (http://earthobservatory.nasa.gov/Newsroom/New Images/).