Yellowstone River Lower Falls

f22 @ 1/5s, Nikon D3S w 80-200mm @ 105mm, ND8 filter

"Yellowstone Falls," Wikipedia, the free encyclopedia. Yellowstone Falls consist of two major waterfalls on the Yellowstone River, within Yellowstone National Park, Wyoming, United States. As the Yellowstone river flows north from Yellowstone Lake, it leaves the Hayden Valley and plunges first over Upper Yellowstone Falls and then a quarter mile (400 m) downstream over Lower Yellowstone Falls, at which point it then enters the Grand Canyon of the Yellowstone, which is up to 1,000 feet (304 m) deep.
Yellowstone River Lower Falls, Yellowstone National Park, Wyoming