Kambhorn reflected in lagoon, Iceland
Skjaldbreidur shield volcano, Iceland
Volcanic rocks
West Mata underwater volcano
Aa lava, Pacaya, Guatemala
Lava flow
Lava flow, deep sea vent
Obsidian-rich lava flow, Tenerife
Sample of basalt
Eruption of Mount Batu Tara, August 2011
Volcanic rock
Eruption of Fuego volcano, November 2016
Fractured pillow lava, deep sea vent
La Tarta volcanic outcrop, Tenerife
Marum volcano, Vanuatu
Quartz-feldspar porphyry
Banded gneiss
Obsidian lava
Obsidian rock
Kenyte lava
Basalt bomb
Fjallaback Nature Reserve, Iceland
Eruption of Momotombo volcano, February 2016
Nyiragongo volcano, Congo
Pillow lava, deep sea vent
Volcanic eruption
Santiago crater lava lake, Masaya caldera, Nicaragua
Volcanic solfatara formation
Eldhraun lava field, Iceland
Mineral hot springs, Iceland
Tangaroan volcanic eruption, artwork
Aerial near Hekla Volcano
Sample of granite
Pillow lava near Laugarvatn, Iceland
New island formed by Hunga Tonga volcano, 2017
Basaltic lava flow, New Mexico, USA
Lava tube tourist attraction, Hawaii
Eruption of Mount Rinjani, November 2015
Volcanic landscapes in Western Iceland.
Agglomerate rock, polarised LM
Italian medieval city on volcanic neck
Erta Ale Volcano, Ethiopia
Volcanic eruption, Reunion Island
Volcanic lava delta
Volcan de Fuego erupting at night, Guatemala
Diorite intruded by microgranite
Bozen quartz porphyry, South Tyrol, Italy
Volcanic pseudocraters, Iceland
Summit crater of Hverfjall volcano, Iceland
Lenticular clouds over Andean volcanoes
Atacama salt flat and Licancabur volcano
Whakaari volcano sulphur deposits, New Zealand
Volcanic crater
Foss a Sidu waterfall, Iceland
Geothermal fumerole
Soufriere Hills volcano erupting
Volcanic atoll formation stages
West Mata underwater volcano, sonar map
West Mata underwater volcano, bathymetry
West Mata underwater volcano, altimetry
Giant's Causeway
Water-filled crevice near Thingvellir, Iceland
Geography in Thingvellir National Park in Iceland,Iceland
Eruption of Stromboli, July 2014
Lava landscape
Lava fields, Lanzarote, Canary Islands
Snow storm over lava fields, Iceland
Basalt pavement, Iceland
Basalt outcrop
Hornblende-biotite granite
East Pacific Rise, topographic map
Lava flow running into the sea off Hawaii
Horns of Torres del Paine, Patagonia
Basalt columns
Iceland, LiDAR image
Myrdalsjokull ice cap over Katla volcano, satellite image
Erta Ale volcano, Congo
Montana Los Rodeos, Canary Islands
Volcanic cinder rock quarry
Mountain, illustration
Volcanic landscape, Lanzarote
Rhyolite mountain, Iceland
Mount Cotopaxi
Solidified volcanic ash
Geothermal algae, New Zealand
Columnar joints
Amphibolite metamorphic rock
Igneous rocks near Arbatax, Sardinia, Italy
Black smoker hydrothermal vent
Sulphur rocks
Troll toes rock formations, Iceland
Eruption of Klyuchevskoy volcano, October 2013
Volcanic landscape, Lanzarote, Canary Islands
Ancient lava flow, Lanzarote, Canary Islands
Hengifoss waterfall, Iceland
Geothermal formation
Strombolicchio volcanic plug, Tyrrhenian Sea
Lava flows
Smoke and light coming through crack in lava rock, elevated view
Sample of biotite
Pegmatite specimen
Tuff specimen
Biotite
Biotite, Tyringham, Massachusetts, USA
Rhyolite, Mexico
Cutaway model of the Earth's core
Rhyolite
Trachyte
Aggregate of muscovite crystals
Banded rhyolite