Outside Moab, Utah, lie some of the coolest, most defined dinosaur tracks I've seen. A tremendous lumbering sauropod, probably a camasaurus, walked along a drying streambed. It turned to the right, one of the few tracks in the world showing such a change in direction.

Around the same time, an allosaur ran across the streambed, its individual footprints so far apart in its impressive gait that I really got the intense sensation of how huge these creatures really were.

Other smaller theropods, perhaps carnosaurs as well, had run in the same tracks as the sauropod. Their three toed footprints left deep impressions in the once muddy soil.

As I stood next to the allosaur prints, I imagined this magical place millions of years before. I imagined what that allosaur must have seen, must have smelled, as it raced along a landscape untouched by human design.