Global Volcanism Program | Image GVP-11570
The light-colored pyramidal island at the left is a small island of trachytic rocks between Bahia Wafer and Bahia Chathan, on the NE side of Cocos Island. The plug-like islet lies north of a massive lava dome lying between the two bays and consisting of flow-banded benmoreitic, trachytic, and quartz trachytic rocks.
Photo by Pat Castillo, 1984 (Scripps Institution of Oceanography, University of California San Diego).
This image is made available under the Creative Commons BY-NC-ND 4.0 license terms.