Global Volcanism Program | Image GVP-06244
The crater of Monte da Guia tuff cone at the SE tip of Fayal Island has been breached by the sea, forming a circular bay measuring about 500 m long. This view looks out to sea from the NW rim of the cone, which was formed by phreatomagmatic eruptions produced when magma encountered water along the coast. A small boat used by divers provides scale off the headland at left center.
Photo by Rick Wunderman, 1997 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.