Global Volcanism Program | Image GVP-04029
Ixpaco crater, a 1-km-wide tuff ring on the NW flank of Tecuamburro volcano, was formed during an explosive eruption about 2900 years ago. This marks the youngest dated eruption of the Tecuamburro volcanic complex. An acidic lake fills the tuff ring, and fumaroles, acid-sulfate hot springs, and mud pots occur around the lake. Colloidal sulfur turns the lake a milky green color. This view is from the north with the forested lava domes of Cerro Miraflores (left) and Cerro Pena Blanca (right) in the background.
Photo by Lee Siebert, 1988 (Smithsonian Institution).