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| Not so little-known-fact: the park was named for the yellow cliffs along the Yellowstone River, which the natives called "the rock yellow river." | Amazing how plants can cling to weird surfaces and survive. | Yes, they really are that color. | The canyon? Is huge. | Up the canyon a ways is the lower falls themselves. | Dunno if you can see it very well, but there's a green streak through the water about 1/5th in from the left. I don't know how or why it's there, but it's really cool. |