Images

View of the high temperature fumaroles and acid lake inside the crater of Santa Ana volcano as scene from the summit. Note the white and yellow coloration caused by hydrothermal alteration and deposition of native sulfur. Photo by Bill Rose.

Aerial view of the crater as scene from the southeast side. Note the collapse benches and fault cutting through them. Also note on the first bench above the crater lake several small concentric spatter cones produced during the last eruption of 1904. Photo by Bill Rose

View of the crater lake from the southeast rim. Level of the lake varies from rainy season to dry season. Photo by Bill Rose.

View of the crater lake from the northeast rim. Note on the right side the layering of scorias and phreatomagmatic deposits deposited during the 1904 eruption. Photo by Bill Rose.

View of the west crater walls and crater lake. Photo by Carlos Pullinger, 1991.

View of the south flank of the summit of Santa Ana volcano, picture taken from the summit of Izalco volcano, on the foreground. Cerro Verde is seen on the right. Photo by Carlos Pullinger, 1996.

View of Santa Ana volcano from the southwest. Los Naranjos volcano can be seen to the left of Santa Ana. The small town in the middle foreground is Juayua, one of the most important areas of coffee production of El Salvador. Photo by Carlos Pullinger, 1996.

View of the crater lake of Santa Ana volcano. Photo was taken at the end of the rainy season in May 1997. Color of water is probably caused by the extreme acidity of the water. Photo by Carlos Pullinger.

View of the southern crater wall. Photo by Carlos Pullinger, May 1997.

View of the southern crater wall, where scorias from the 1904 blanket the rim. Photo by Carlos Pullinger, May 1997.

View of the fumarolic area and the crater lake. Photo by Carlos Pullinger, May 1997.

View of the southern crater wall and inner crater rim. Photo by Carlos Pullinger, May 1997.