Morley Read / Reventador Volcano erupting at dawn, Ecuador, 2017. The mountain has been in a constant state of eruption since 2002. (non-ex)

Vincent Grafhorst / Minden / Crater of active volcano at twilight, Erta Ale, Danakil Depression, Ethiopia

Christophe Courteau / Steam emerging from a fault on the summit of Nyiragongo Volcano, Democratic Republic of Congo. 2015.

Enrique Lopez-Tapia / Travelers watching lava on Erta Ale volcano crater. Afar Region, Ethiopia, Africa. November 2014.

Claudio Contreras / American coot (Fulica americana americana) in mist, with Popocatepetl volcano behind, Xochimilco wetlands, Mexico City, Mexico. November.

Sergey Gorshkov / Plume of volcanic ash lit by a basaltic lava flow from the Tolbachik volcano complex, Kamchatka, Far East Russia, eruption lasted from December 22nd 2012 through to January 2nd 2013.

Sergey Gorshkov / Tolbachik Volcano erupting, Kamchatka, Russia

Loic Poidevin / Eruption and molten lava flowing down the sides of the Erta ale volcano (the smoking mountain) in the Afar desert, Northern Ethiopia, February 2009

Loic Poidevin / Aerial view of hot lava in the crater of the Erta ale volcano (the smoking mountain) in the Afar desert, Northern Ethiopia, February 2009

Uri Golman / Volcanic eruption near Eyjafjallajoekull glacier, hot lava flowing down into the Thorsmork valley, Iceland, 24/03/2010. Volcano dormant since 1821.

Martin Gabriel / Arenal Volcano at sunset, clouds mixing with smoke, Costa Rica, February 2009

Martin Gabriel / Arenal Volcano with crown of clouds around the summit at sunrise, La Fortuna, Costa Rica, February 2009