This is a beautiful area of Yellowstone National Park (as with the rest). There is a deep gorge that is called the Grand Canyon of Yellowstone. This first picture was taken from the parking lot overview.
There is a trail that descends the entire distance down into the canyon to the head of the falls that you see in this first picture. The next pictures are a series of shots from that vantage point.
It had been 20 years since I hiked down the trail. It is quite a distance and in need of repair, but it us well worth it!