July 25, 2009; Tower-Roosevelt;Yellowstone National Park.

From Wikipedia:
Tower Fall is a waterfall on Tower Creek in the northeastern region of Yellowstone National Park, in the U.S. state of Wyoming. Approximately 1,000 yards (910 m) upstream from the creek's confluence with the Yellowstone River, the fall plunges 132 feet (40 m). Its name comes from the rock pinnacles at the top of the fall. Tower Creek and Tower Falls are located approximately three miles south of Roosevelt Junction on the Tower-Canyon road.