Global Volcanism Program | Image GVP-04634
An ash plume rises above Caliente vent of Santiaguito lava dome in November 1993 as a small pyroclastic flow descends its eastern flank. The headwall of the 1902 explosion crater on the SW flank of Santa María volcano appears at the right. The compound dacitic Santiaguito lava dome began growing in 1922 from the Caliente vent at 2200 m elevation at the base of the 1902 explosion crater. Caliente, the easternmost vent of Santiaguito, rises about 300 m above the floor of the 1902 crater. Caliente has been in frequent activity since the early 1970s.
Photo by Lee Siebert, 1993 (Smithsonian Institution).