The black lava flows that descend into Santorini's caldera bay are the Dafni lavas, erupted during 1925-26. During this eruption, which began in August 1925 and lasted until January 1926, Nea Kameni became a single island as the Dafni lavas united Mikra Kameni, Nea Kameni, and the Georgios domes. Eruptions resumed in May 1926, producing small pyroclastic flows. The steep-sided eastern caldera wall rises in the distance, capped by the town of Fira and the smooth-textured pyroclastic-flow deposits of the Minoan eruption.

Photo by Lee Siebert, 1994 (Smithsonian Institution)

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

Galleries: Volcanic Outcrops

Keywords: caldera | outcrop | geology | deposit

Santorini