Global Volcanism Program | Image GVP-07653
Pico de Orizaba volcano is seen here from the south, with snow-free Sierra Negra volcano to its left. Sierra Negra is the southernmost major vent of the roughly NNE-SSW-trending Pico de Orizaba-Cofre de Perote volcanic chain. The construction of Sierra Negra was contemporaneous with the mid-Pleistocene early stages in the formation of Orizaba volcano. Sierra Negra is composed largely of lava flows and produced numerous pyroclastic flows mainly to the SW and W.
Photo by Lee Siebert, 1998 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.