How does the rock do that? Incredible!?!?! This was the first trail Ralf, my little dog, "hiked." Being a born and bred city dog, he wasn't to thrilled by the whole affair. He kept looking for a sidewalk. Poor little guy didn't appreciate the many wondrous sights. A note of caution: there are thorns and sharp little things that get caught up in paws and coats. Be sure to check your hiking friend for such things during and at the end of any hike.