The approximately 4-kilometer-wide Dendi Caldera includes some of this silica-rich volcanic rock: the rim of the caldera, visible in this astronaut photograph, is mostly made of poorly consolidated ash erupted during the Tertiary Period (approximately 65–2 million years ago).
Published Mar 31, 2008
Acquired May 22, 2002, this natural-color image shows Valles Caldera in New Mexico.
Published May 22, 2011
An unusual type of lava erupted beneath ice to form many of the otherworldly geological features within Torfajökull.
Published Mar 16, 2018
Tenerife is the largest of the Canary Islands, a Spanish possession located off the northwestern coast of Africa. The central feature of this astronaut photograph is the elliptical depression of the Las Cañadas Caldera that measures 170 square kilometers (about 65 square miles).
Published Jul 17, 2006
Acquired June 14, 2010, this natural-color image shows Rabaul Caldera on the northeastern tip of Papua New Guinea’s New Britain.
Published Aug 6, 2010
These nested volcanic features grew as small, secondary vents along the flanks of larger volcanoes.
Published Mar 19, 2020
This natural-color image from the Landsat satellite on October 5, 2000, shows El Aguajito Caldera, Las Tres Vírgenes, and La Reforma Caldera on the Baja Peninsula.
Published Dec 23, 2008
One of the largest volcanic eruptions in the past 10,000 years occurred in approximately 1620 BC on the volcanic island of Santorini in the Aegean Sea. This astronaut photograph illustrates the center of Santorini Volcano, located approximately 118 kilometers to the north of Crete.
Published Jun 30, 2008
This astronaut photo shows the blue-green waters of Lake Ilopango, which fills the caldera of a volcano in El Salvador that last erupted in 1879.
Published Dec 14, 2009
The Campi Flegrei calderas, adjacent to Naples, Italy, have produced two of the largest eruptions in Europe in the last 40,000 years.
Published Jan 9, 2013
