Wild Wonders of Europe / O Haarberg / Volcanic activity, Steam vent at Hverir, Nmafjall, Iceland, July 2008

Wild Wonders of Europe / O Haarberg / Steam vent, Rhyolite / Rhiolite mountains, Landmannalaugar, Iceland, June 2008

Orsolya Haarberg / Rhiolite mountains at Landmannalaugar. Rhyiolite volcanism. Iceland. June 2008

Orsolya Haarberg / Steam vent at Hverir. Nmafjall, Iceland. June 2008

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) group in overheated sky-pointing posture with new lava flow, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Mitsuaki Iwago / Galapagos Giant Tortoise (Chelonoidis nigra) pair and thermal vents, Galapagos Islands, Ecuador

Orsolya Haarberg / Fumarole on the side of Mountain Krafla, Iceland, June 2010

Orsolya Haarberg / View over the hot spring area west of Hrafntinnusker, Fjallabak Nature Reserve, Iceland, August 2010

Orsolya Haarberg / View over the hot spring area west of Hrafntinnusker, frosted sand moraines on ice can be seen in the foreground, Fjallabak Nature Reserve, Iceland, August 2010

Orsolya Haarberg / View over Thorsmork from the top of Hrafntinnusker, showing fumaroles, Fjallabak Nature Reserve, Iceland, August 2010

Orsolya Haarberg / Hot springs and fumarole, dawn, Hveravellir, Iceland, May 2010

Pete Oxford / Galapagos Giant tortoise (Geochelone elephantophus vandenburghi) near steam vent, Alcedo Volcano crater floor, Isabela Island Galapgos islands, Ecuador, South America

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) searching for water around steaming fumaroles during prolonged dry season, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) male with steaming fumaroles on caldera floor, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) male walking past steaming fumaroles on caldera, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) male walking past steaming fumaroles in caldera, Isabella Island, Galapagos Islands, Ecuador

Wild Wonders of Europe / O Haarberg / Volcanic activity, Steam vent, Hverir, Nmafjall, Iceland, July 2008

Orsolya Haarberg / Steam vent at Hverir. Námafjall, Iceland. June 2008

Orsolya Haarberg / Rhiolite mountains at Landmannalaugar. Rhyiolite volcanism. Iceland. June 2008

Pete Oxford / Galapagos Giant Tortoise (Geochelone elephantophus vandenburghi) walking and eating with a steam vent in the background, Alcedo Volcano crater floor, Isabela Island, Galapagos Islands, Ecuador, South...

Pete Oxford / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) and steam vent, Alcedo Volcano crater floor, Isabella Island, Galapagos Islands, Ecuador

Pete Oxford / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) and steam vent, Alcedo Volcano crater floor, Isabella Island, Galapagos Islands, Ecuador

Pete Oxford / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) and steam vent, Alcedo Volcano crater floor, Isabella Island, Galapagos Islands, Ecuador

Ingrid Visser / Active volcanic vent on White Island, Bay of Plenty, New Zealand

Ingrid Visser / Active volcanic vent on White Island, Bay of Plenty, New Zealand

Harley Betts / Active volcanic vent 90 meters below sea level, White Island, Bay of Plenty, New Zealand

Patricio Robles Gil / Volcano erupted a few years ago and it's still active near the city of Rabaul, north of New Britian, Papua New Guinea

Colin Monteath / Steaming fumaroles at sunset, Mt Erebus, Ross Island, Antarctica

Pete Oxford / Fumaroles at 4850 meters, altiplano region, Sol de Manana, southwestern Bolivia

Gerry Ellis / Active steam vents on Roaring Mountain, Yellowstone National Park, Wyoming

Jan Vermeer / Hot steam vents, Iceland

Jan Vermeer / Hot steam vents, Iceland

Tui De Roy / Galapagos Giant Tortoise (Chelonoidis nigra) amid steaming fumaroles along caldera rim, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Giant Tortoise (Chelonoidis nigra) group searching for moisture among steaming fumaroles on caldera rim, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Giant Tortoise (Chelonoidis nigra) group searching for moisture among steaming fumaroles on caldera rim, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Norbert Wu / Sulfur vents fuming at active volcano, White Island, New Zealand

Norbert Wu / Sulfur vents fuming at active volcano, White Island, New Zealand

Tui De Roy / Overlooking steam plume from lava flow entering sea along steep shoreline, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Hawk (Buteo galapagoensis) overlooking sulphur fumaroles on caldera rim, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / San Juan anchored near lava flow, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) group in overheated sky-pointing posture with new lava flow, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Giant Tortoise (Chelonoidis nigra) with steaming fumarole vents, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / An Aa lava flow entering the sea causing steam plume and roil, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Giant Tortoise (Chelonoidis nigra) overlooking caldera with steaming fumaroles, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Hawk (Buteo galapagoensis) pair landing on snags near sulphur fumaroles on caldera rim, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) group in overheated sky-pointing posture with new lava flow, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Mockingbird (Nesomimus parvulus) surveying its territory from atop a Giant Candelabra Cactus (Jasminocereus thouarsii) near fountain vent, Cape Hammond, Fernandina Island, Galapagos Islands,...

Tui De Roy / Brown Pelican (Pelecanus occidentalis) killed from eating dead fish in lava heated waters, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) flock flying over lava heated waters, attracted by dead fish, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Lava flow entering the sea creates huge steam plumes, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Geysers in extensive geothermal field in Andean foothills, Atacama Desert, Andes Mountains, Chile

Chien Lee / Noxious hot fumes escape from a volcanic vent on Mount Papandayan leaving behind deposits of sulfur, Indonesia

Chien Lee / Noxious hot fumes escape from a volcanic vent on Mount Papandayan leaving behind deposits of sulfur, Indonesia

Chien Lee / Noxious hot fumes escape from a volcanic vent on Mount Papandayan leaving behind deposits of sulfur, Indonesia

Chien Lee / Noxious hot fumes escape from a volcanic vent on Mount Papandayan leaving behind deposits of sulfur, Indonesia

Pete Oxford / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) and steam vent, Alcedo Volcano crater floor, Isabella Island, Galapagos Islands, Ecuador

Harley Betts / Active volcanic vent 90 meters below sea level, White Island, Bay of Plenty, New Zealand

Tui De Roy / Galapagos Giant Tortoise (Chelonoidis nigra) amid steaming fumaroles, caldera rim, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Hawk (Buteo galapagoensis) perched on rocks near sulphur fumaroles, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Geysers in extensive geothermal field in Andean foothills, Atacama Desert, Andes Mountains, Chile

Tui De Roy / Geysers in extensive geothermal field in Andean foothills, Atacama Desert, Andes Mountains, Chile