The majestic 84-feet (26 m) Gibbon Falls is a must see while in Yellowstone. Gibbon Falls was formed by the Gibbon River plummeting over the rim into the caldera. The falls have actually retreated upstream a short distance through an erosional process known as “knickpoint retreat”. While the falls can be partly seen from the road, you need to access the large parking lot on the falls side of the road to park, get out and walk the wheelchair accessible paved path. The path has a 7% grade, begins above the brink of the falls and runs 1,200 feet down the canyon edge providing beautiful views of the falls with lots of photo opportunities, and a unique view of the continuation of the river as it flows down the valley. There are no restrooms at this site.