The low ridge on the left-hand horizon is the southern rim of a large horseshoe-shaped crater left by collapse of Miraflores, an ancestral edifice of the Tecuamburro volcanic complex. Miraflores formed about 100,000 years ago and collapsed sometime prior to 38,000 years ago. The vegetated peak to the right is part of the Tecuamburro lava dome complex, which formed within the scarp.

Photo by Lee Siebert, 1988 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Keywords: lava dome

Tecuamburro