Svartifoss, Iceland

Photograph by Giacomo Ciangottini

Svartifoss (Black Fall) is surrounded by the dark lava columns that gave rise to its name. The hexagonal columns were formed inside a lava flow that cooled extremely slowly, giving rise to crystallization. Skaftafell National Park, Iceland .

(This photo and caption were submitted to the 2012 National Geographic Traveler Photo Contest.)

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