Global Volcanism Program | Image GVP-03946
Agua volcano towers above the town of Santa María de Jesus on its NE flank. The shallow summit crater of Agua is notched on its northern side and was the source of a major mudflow in 1541 that destroyed towns on the NW flank of the volcano. This catastrophe was not accompanied by an eruption.
Photo by Lee Siebert, 1988 (Smithsonian Institution).