From National Geographic Photo Of The Day; September 4, 2012:
Litlanesfoss, Iceland Wild Wonders of Europe
At Litlanesfoss, the waterfall cross-sections an ancient lava flow, which formed columns as it cooled.
See more pictures from the May 2012 feature story ”Iceland’s Resilient Beauty.” Download National Geographic for the iPad for the latest issue of the magazine plus exclusive stories, photos, and video.