Svartifoss - National Geographic Photo of the Day
photography.nationalgeographic.com/photography/photo-of-the-day/svartifoss-waterfall-iceland
What Jamie wrote
Amazing looking waterfall with very cool lava columns. Need to put this on the list for the 2nd visit.
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.