20 minutes north of Moab you'll find hundreds of dinosaur and crocodile tracks in a well preserved site. There are great signs showing what dinosaurs made the tracks. We usually spend 30-45 minutes looking at all of the tracks!
Mill Canyon Dinosaur Bones and Slot Challenge
5 minutes from the tracks you can find actual dinosaur bones in the rock. There is a great trail with signs that describe what you're looking at. There is a also a big embedded petrified tree near the end of the trail.
Once you get past the petrified tree, look directly south at the cliffs. Scramble up the hill and work your way along the cliffs until you find the crack in the earth. If you're above 220 pounds you may not be able to squeeze through. It only takes about 10 minutes to get through the crack, but you'll be rewarded with a beautiful view of the surrounding area!
This is rattlesnake country, so watch where you step. We found a beautiful little midget faded rattlesnake on our last trip there. They are very shy, so don't be worried, just careful!