Horse Crossing Trail Professional Review and Guide
"Horse Crossing Trail 20, another route to East Clear Creek, provides a tougher workout than the trail at Macks Crossing but it is shadier, more remote, and open to hiking and horseback riding only. Once your dog is watered and leashed—pack in additional drinking water for the trail and treat any you take from the stream—head out onto the path from the parking circle.
The trail immediately takes a sharp right and leads you and your dog south to the creek. As with nearly all rugged canyon trails that lead to water, the footpath has a few loose, rocky segments on tighter switchbacks as well as sandy stretches along the streambanks. Overall, however, the path is a paw-pleasing, compacted forest floor."