Lower Falls in Yellowstone National Park

Canyon Area Waterfall

The Yellowstone River tumbles 308 feet, striking the canyon floor with such force that it sends foam and mist hundreds of feet upward, dampening the rocks so constantly that bright green moss grows high above the water. Lower Falls is twice the height of Niagara Falls. As the water races on and finally stops foaming, it looks green but, in reality, it is totally clear. The river's color is from algae and moss.

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