Upper Yosemite Falls, California

Photograph by Andrew Coffing

This 30-second exposure revealed a moonbow hidden in the mist at the foot of the falls. The full moon and clear sky made for a perfect photo op from the Yosemite Valley floor.

(This photo and caption were submitted to the 2011 National Geographic Photo Contest .)

See all contest entries » See more pictures of Yosemite National Park »