Summit crater of Hverfjall volcano, Iceland
Volcanic crater
New island formed by Hunga Tonga volcano, 2017
Solidified volcanic ash
Tephra surface of Hunga Tonga窶滴unga Ha'apai island
View of small volcanic ash mud-flows on snow
Tuff
Lapilli, lava droplets
Volcanic eruption
Overlook crater on Kilauea, May 2018
Eruption of Fuego volcano, Guatemala, February 2018
Whakaari volcano geothermal area, New Zealand
Mount Agung volcano in Indonesia, satellite image
Volcano and steam cloud, New Zealand
Whakaari volcano vent and tour helicopter, New Zealand
Volcanic ash
Eruption of Fuego volcano, November 2016
Eruption of Momotombo volcano, February 2016
Bedded tuff with two piles of volcanic ash
Bentonite clay mound, Arizona, USA
Caldera Blanca, Lanzarote
Ash plume rising from a vent on Kilauea, May 2018
Layers of volcanic ash in rock
Katmai volcano erupting, Alaska, 1913
Volcan de Fuego erupting at night, Guatemala
Volcanic eruption, Reunion Island
Eruption of Sakurajima volcano, March 2015
Whakaari volcano sulphur deposits, New Zealand
Whakaari volcano tour group, New Zealand
Skjaldbreidur shield volcano, Iceland
Volcano at night
Mount Etna volcano erupting
Welded Tuft
Sakurajima volcano erupting, Japan, 2012
West Mata underwater volcano
Pillow lava near Laugarvatn, Iceland
Volcan de Fuego ash erupting, Guatemala
Volcanic lava flow, artwork
Badlands, John Day National Monument, USA
Aa lava, Pacaya, Guatemala
Volcanic rocks
Sample of basalt
Kambhorn reflected in lagoon, Iceland
Tangaroan volcanic eruption, artwork
Obsidian-rich lava flow, Tenerife
Myrdalsjokull ice cap over Katla volcano, satellite image
Reventador volcano erupting, Ecuador
Meltwater pools
Tungurahua volcano, Ecuador
Puu Oo crater on Kilauea, May 2018
Summit of Snaefellsjokull volcano, Iceland
Volcanic ash, SEM
Kilauea eruption, May 2018
Lava tube tourist attraction, Hawaii
Hunga Tonga-Hunga Ha'apai volcano plume, satellite images
Marum volcano, Vanuatu
Nyiragongo volcano, Congo
Rio Blanco, Chaiten, Chile
Eruption of Vesuvius, 1906
Kilauea eruption earthquake map, 2 May 2018
Eruption of Mount Batu Tara, August 2011
USGS scientists monitoring Kilauea eruption, May 2018
Mars over Taftan volcano, Iran
Fjallaback Nature Reserve, Iceland
Mount Cleveland, Alaska, ISS image
Tunguragua volcano
Eruption of Klyuchevskoy volcano, October 2013
Lava flow from Kilauea, Hawaii, USA
La Tarta volcanic outcrop, Tenerife
Volcanic solfatara formation
Volcanic mud pools
Geothermal fumerole
Black smoker hydrothermal vent
Sulphur rocks
Eruption of Stromboli, July 2014
Geothermal mineral deposits, Ethiopia
Nyamulagira volcano, Congo
Tharsis Tholis volcano, Mars Express image
Home Reef volcanic island emerging, 2006
Cracked ground due to Kilauea eruption, May 2018
Kilauea eruption fissures, May 2018
Artwork of Volcanic Moon Io
Boiling mud pool
Soufriere Hills volcano erupting
Kenyte lava
Diorite intruded by microgranite
Basalt bomb
Quartz-feldspar porphyry
Banded gneiss
Obsidian lava
Obsidian rock
Sample of granite
Volcanic crater lake
Sciara del Fuoco on Stromboli, July 2014
Batur volcano
Lava flow
Basaltic lava flow, New Mexico, USA
Sunrise over Krestovsky volcano, Kamchatka, Russia
Volcanic landscape, Lanzarote
Lava flow from volcano eruption on La Palma, satellite image
Mineral hot springs, Iceland
Glowing ash rising from a volcanic vent, Pico do Fogo
1759 El Jorullo eruption, Mexico
熊本県 阿蘇山の道
熊本県 阿蘇山
砂千里ヶ浜
Nea Kameni island, Santorini, Greece
Buried house
Gunung Bromo volcanic crater
Biblis Patera volcanic crater, Mars
Vanuatu, Volcano eruption
Arenal Volcano, Costa Rica
Erta Ale volcano, Congo
Yasur volcano, Vanuatu
Bezymianny volcano, satellite image
Mount Semeru volcano
Batur volcano erupting
Earth crater, 19th century
Santiago crater lava lake, Masaya caldera, Nicaragua
Mount Etna eruption
Volcanic gas eruption
Lava flow due to Kilauea eruption, May 2018
Erupting El Chichon volcano, Mexico
Teide volcano, Tenerife, Canary Islands
Chaiten volcano, Chile, satellite image
West Mata underwater volcano, bathymetry
West Mata underwater volcano, altimetry
Geothermal hot spring vents, Ethiopia