Philippe Clement / The solar furnace at Odeillo in the Pyrenees-Orientales, Pyrenees, France, July 2012. No release available

Jerry Monkman / Man stoking the fire in the sap evaporator of the sugar house at Sugarbush Farm in Woodstock, Vermont, USA, April 2008.

Philippe Clement / The solar furnace at Odeillo in the Pyrenees-Orientales, Pyrenees, France, July 2012

Jeff Vanuga / Fiery Furnace rock formation. Arches National Park, Utah, USA, November 2010.

Doug Wechsler / Pothole in the Fiery Furnace canyons, Arches National Park, Utah, USA. June

Doug Wechsler / Pothole in the Fiery Furnace canyons, Arches National Park, Utah, USA, June

Tim Fitzharris / Looking at Panamint Range over the Furnace Creek playa from Zabriskie Point, Death Valley National Park, California

Tim Fitzharris / Snag in front of Fiery Furnace labyrinth showing narrow sandstone canyons and fins, Arches National Park, Utah

Onne van der Wal / The furnace in the foundry at the abandoned whaling station in Grytviken, South Georgia.

Onne van der Wal / The furnace in the foundry at the abandoned whaling station in Grytviken, South Georgia.

Roberto Rinaldi / Sign in front of La Plaines des Cafres (the plain of Cafres), Piton de la Fournaise (Peak of the Furnace), La Réunion, Indian Ocean

GEORGETTE DOUWMA / Fiery furnace Arches NP Utah USA. sandstone erosion