Sven Zacek / Moonlight illuminating icebergs, Jokulsarlon lava beach, Iceland. September 2011.

Floris van Breugel / White corals scattered on black lava rocks polished by the ocean and the Milky Way, southern Maui, Hawaii. July 2011.

Christophe Courteau / Road built along the path of the latest lava flow, leading towards Nyiragongo volcano silhouetted in the background, Virunga National Park, Democratic Republic of the Congo, August 2010.

Orsolya Haarberg / Snow-covered rocks in lava field with lone coloured pebble. Búðahraun Nature Reserve, Snæfellsnes peninsula. Iceland.

Gavin Hellier / The Blue Lagoon, Iceland's most famous tourist attraction is located among the black lava flows outside Reykjavik. The geothermal spa owes its existence to the Svartsengi geothermal power plant powere...

Gavin Hellier / The Blue Lagoon, Iceland's most famous tourist attraction is located among the black lava flows outside Reykjavik. The geothermal spa owes its existence to the Svartsengi geothermal power plant powere...

Floris van Breugel / Strange ice stalagmites collect under slowly dripping water in one of the many lava tube caves of Lava Beds National Monument, Northern California, USA, December

Erlend Haarberg / Glacier ice in shallow water on black lava sand on beach, Oraefi, Iceland, June

Erlend Haarberg / Stones on black lava sand on beach, Oraefi, Iceland, June 2008

Erlend Haarberg / Solidified lava surface from previous volcanic activity, Leirhnjukur, Iceland, June 2008

John Abbott / Lava gull (Leucophaeus fuliginosus) on beach, Genovesa Island, Galapagos

Angelo Gandolfi / View of the Fiora river, which has excavated the tufaceous layer, exposing the lava flow made of black Tephrite rocks and forming Pellicone lake, Vulci archaeological and nature park, Lazio, Italy. Ma...