Global Volcanism Program | Image GVP-03882
Volcán Santo Tomás is a Pleistocene stratovolcano, seen here from the summit of Santa María volcano to its NW. Geothermal activity occurs 3 km N and NW of the Volcán Zunil summit (right), which is located at the southern end of the volcanic complex. The Tolimán-Atitlán and Acatenango-Fuego complexes appear in the distance.
Photo by Lee Siebert, 1993 (Smithsonian Institution).