Uri Golman / Volcanic eruption near Eyjafjallajoekull glacier, ash and smoke exploding into the air, Iceland, 24/03/2010. Volcano dormant since 1821.

Erlend Haarberg / Volcanic eruption at Eyjafjallajokull with ash and lava exploding into the air at night, Iceland, May 2010

Erlend Haarberg / Volcanic eruption at Eyjafjallajokull with lightning in the ash plume, Iceland, April 2010

Erlend Haarberg / Subglacial volcanic eruption under the Eyjafjallajokull ice cap with northern lights above the ash plume at night, Iceland, April 2010

Orsolya Haarberg / Ash plume, white cloud and snowy ridge at the subglacial volcanic eruption under the Eyjafjallajokull ice cap in Iceland, April 2010. Second place in Landscape category of the GDT 2011 competition

Inaki Relanzon / Volcanic eruption, Eyjafjallajokull, near the Myrdalsjokull glacier, South Iceland, april 2010.

Inaki Relanzon / Volcanic eruption, Eyjafjallajokull, near the Myrdalsjokull glacier, South Iceland, april 2010.

Inaki Relanzon / Volcanic eruption, Eyjafjallajokull, near the Myrdalsjokull glacier, South Iceland, april 2010.

Inaki Relanzon / Volcanic eruption, Eyjafjallajokull, near the Myrdalsjokull glacier, South Iceland, april 2010.

Orsolya Haarberg / Patterns of sand, ice and volcanic ash on the slope of the Reykjafjoll mountain, Fjallabak Nature Reserve, Iceland, sunset, August 2010

Orsolya Haarberg / Volcanic ash and lava eruption from the volcano under the Eyjafjallajokull ice cap, steam rises as the flowing lava interacts with glacier ice, Iceland, May 2010

Orsolya Haarberg / Snow covered landscape with Vik church in the background, the large stones in the foreground have been covered with volcanic ash from the Eyafjallajokull volcano, Iceland, April 2010

Pete Oxford / Bartolome Island a landscape of lava and ash, Galapagos Islands, Ecuador

Jabruson / Volcanic eruption of Kimanura volcano, 1989, Democratic Republic of Congo

Tui De Roy / Mt Ruapehu eruption 1996, highest volcano on North Island, Ohakune, Tongariro National Park, New Zealand

Erlend Haarberg / Abstract pattern of ice, sand and volcanic ash on the mountain side of Reykjafjoll in the Fjallabak Nature Reserve, Hrafntinnusker, Iceland, August 2010

Orsolya Haarberg / Wave patterns on beach of black volcanic sand, Dyrholaey, Iceland, February 2011

Orsolya Haarberg / Edge of the Eyjafjallajokull ice cap, partly covered in volcanic ash after the subglacial eruption, Iceland, April 2010

Erlend Haarberg / Subglacial volcanic eruption under the Eyjafjallajokull ice cap with ash plume from the volcano above, Iceland, April 2010

Kevin Schafer / Erosion through ash deposits from eruption, Mount St Helens Volcanic National Monument, Washington

Inaki Relanzon / Ash from the volcanic eruption of Eyjafjallajokull, near the Myrdalsjokull glacier, South Iceland, april 2010.

Inaki Relanzon / Volcanic eruption, Eyjafjallajokull, near the Myrdalsjokull glacier, South Iceland, april 2010.

Inaki Relanzon / Volcanic eruption, Eyjafjallajokull, near the Myrdalsjokull glacier, South Iceland, april 2010.

Orsolya Haarberg / Patterns of sand, ice and volcanic ash on the slope of the Reykjafjoll mountain, Fjallabak Nature Reserve, Iceland, August 2010

Orsolya Haarberg / Stones covered with volcanic ash at Dyrholaey, after the eruption of the Eyjafjallajokull volcano, Iceland, April 2010

Orsolya Haarberg / Ash plume from a subglacial volcanic eruption under the Eyjafjallajokull ice cap, Iceland, April 2010

Tim Laman / Face of a glacier discoloured by volcanic ash. Antarctica, January 2009

Pete Oxford / Lava Cactus (Brachycereus nesioticus) grows in an arid zone of cool lava, ash and cinder, Santiago Island, Galapagos Islands, Ecuador

Juergen Freund / Cloves drying on the streets of Siau Island which has fertile soil caused by volcanic ash from the Karengetan volcano, Sulwesi, Indonesia

Juergen Freund / Nutmeg {Myristica sp} drying on the streets of Siau Island which has fertile soil caused by volcanic ash from the Karengetan volcano, Sulawesi, Indonesia

Juergen Freund / Freshly harvested cloves drying on the streets of Siau Island which has fertile soil caused by volcanic ash from the Karengetan volcano, Sulawesi, Indonesia

Pete Oxford / Bartolome Island landscape of lava and ash. Galapagos Islands 2006

Pete Oxford / Grey matplants (Tiquilia nesiotica / Boraginaceae) Endemic herb colonises the ash slopes of Bartolome Island. Galapagos Islands

Chris Gomersall / Volcanic ash deposits at Deception Island, South Shetland Isles, Antarctica.

Pete Oxford / Tourist looking at a landscape of lava and ash, Bartolome Island, Galapagos

Mark Jones / Mt Ruapehu time exposure shows lava bomb traces and lightning in swirling ash plume from 1996 eruption, Tongariro National Park, New Zealand

Pete Oxford / Bartolome Island a landscape of lava and ash, Galapagos Islands, Ecuador

Pete Oxford / Bartolome Island a landscape of lava and ash, Galapagos Islands, Ecuador

Jabruson / Trees killed by gases and heat from Kimanura volcanic eruption, Virunga NP, Congo (formerly Zaire)

Neil Lucas / Arenal volcano erupting Costa Rica, October 1995

Mike Potts / Volcanic ash creates barren landscape Ascension Island, South Atlantic 1987

Neil Lucas / Active Arenal volcano erupting with cloud of ash, Costa Rica

Neil Lucas / Active Arenal volcano erupting with cloud of ash, Costa Rica

Doug Wechsler / Ubehebe volcano crater with Desert holly {Atriplex hymenelytra} Death Valley NP, California, USA

RHONDA KLEVANSKY / Llaima volcano smoking, Conguillo NP, Southern Chile

RHONDA KLEVANSKY / Smoke billowing out from Llaima volcano, Conguillo NP, South Chile, South America

Doug Allan / Tungurahua active volcano (5016m) clouds of ash have been erupting for several years, Ecuador

Jose B. Ruiz / Vegetation on volcanic badland, El Hierro, Canary Islands

Jose B. Ruiz / Volcanic landscape with crater, Teide NP, Tenerife, Canary Islands

Jabruson / Aerial view of volcanic fissure - the birth of Kimanura volcano, Virunga NP, Democratic Republic of Congo, formerly Zaire

Patricio Robles Gil / Yasur volcano surrounded with volcanic ash, Tanna, Vanuatu Is, South Pacific, 2003

Tui De Roy / Mt Ruapehu eruption 1996, at 2,927 meters, the highest volcano on the North Island, ash explosion of 3rd day of eruption, Tongariro National Park, New Zealand

Tui De Roy / Mt Ruapehu eruption 1996, at 2,927 meters, the highest volcano on the North Island, ash explosion of 3rd day of eruption, Tongariro National Park, New Zealand

Albert Aanensen / Volcanic ash on snow covering Hebe plant, Mount Ruapehu, New Zealand, North Island.

Daniel Gomez / Petrified Forest NM, Argentina. 150 million yrs ago in jurassic period dense humid forest covered Patagonia. Intense volcanic activity buried region in ash, leaving petrified tree stumps

Daniel Gomez / Petrified Forest NM, Argentina. 150 million yrs ago in jurassic period dense humid forest covered Patagonia. Intense volcanic activity buried region in ash, leaving petrified tree stumps

Daniel Gomez / Petrified stumps of Araucaria tree ancestors. Petrified forest NM, Patagonia, Argentina. 150 million years ago in jurassic dense humid forest covered Patagonia. Volcanic activity buried region in ash,...

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Kevin Schafer / Erosion through ash deposits from eruption, Mount St Helens Volcanic National Monument, Washington

Patricio Robles Gil / Dusky Scrubfowl (Megapodius freycinet) eggs collected by man on a volcanic ash bed, New Britian, Papua New Guinea

Mark Jones / Mt Ruapehu eruption June 1996, dawn on Rangipo Desert as large ash plume drifts over Mt Ngauruhoe, 2291m, Tongariro National Park, New Zealand