Trail begins on the north edge of the drop off zone for the Quarry Building. It runs about 2 miles back to the visitors center. You can ride the tram up to the quarry and take the trail back down to the visitors center. It's an easy hike, some stairs but that's about it. Marked fossils and deposits along the trail and some petroglyphs. As a family, we really enjoyed the trail. I'll post some pictures so everyone can see what this trail is like. Hopefully, it will help you make decisions about your trip to Dinosaur NM. Enjoy!