We started with the south rim of the Grand Canyon of the Yellowstone. The upper falls of the Yellowstone River, shown here, is 109 feet high. The photo below is underexposed to show the waterfall. To get a sense of perspective, see the people standing on the lookout point just to the right of the waterfall.
The lower falls is much higher, at 308 feet high.
This wide-angle photo from the same spot shows the yellow stone of the Grand Canyon of the Yellowstone. The rock is rhyolite, which is high in silica, an ingredient of sand. The Canyon was formed by erosion.
We drove to the north rim to see this rocky spire with an osprey nest at the top. Trout washed over the falls might be easy pickings for the opsrey.