Skugafoss
It took me a few tries to take this long exposure of Skugafoss, the massive southern Icelandic waterfall, between the small groups of tourists slowly making their way to its base. While a person certainly would have added some scale to how large the waterfall really is, I wanted the silky sheen of the flowing water to be unobstructed and people-free.
Photo and caption by Catherine Cole/National Geographic Photo Contest