Photograph of wide river moving along a line of trees, showing rocky embankments on left and right, Yellowstone National Park, Wyoming, [s.d]. In the extreme foreground at center, a wide river can be seen extending from the right to the extreme background at left. To the right, a small rocky embankment is visible with several rocks piled near the river's edge. To the far left, part of a similar embankment can be seen. In the background at center, a large cluster of trees is visible extending from left to right. Additional trees can be seen in the extreme foreground at left.