Footprints from approximately ten different meat-eating dinosaurs can easily be viewed at the Poison Spider Dinosaur Tracksite. The tracks are found on two rock slabs which fell from overlying sandstone atop the cliffs.

Poison Spider Dinosaur Tracksite Trail is a 0.3 mile loop trail located along the Potash Road, west of Moab, Utah. The trailhead overlooks the Colorado River and the hike is rated as moderate. The trail is accessible year-round. Dogs may use this trail but must be kept on leash.

The Navajo Sandstone represents an enormous erg, a large landscape of sand dunes.  Around 90 million years ago, this sand area extended over most of Utah as well as parts of New Mexico, Arizona, Colorado and Wyoming.  Between dune fields were scattered flat areas of wet sand, shallow ponds, and small streams. Dinosaurs crossed these flats and left their footprints, which were sometimes then covered by the shifting dunes and preserved intact. Millions of years later, after the sands had turned to stone, blocks containing the tracks have fallen from the cliffs above and split along the bedding planes, exposing the tracks to the sun once again.