The Fossa cone, formed within the Fossa caldera around 6,000 years ago, is seen here in May 2011. Eruptions there have produced lava flows that reach the base of the cone, pyroclastic surge deposits from phreatomagmatic eruptions, ashfall units, and ballistic ejecta.

Photo by Arianna Soldati, 2011.

This image is made available under the Creative Commons BY-SA 4.0 license terms.

Keywords: island volcano

Vulcano