These dinosaur tracks are in the riverbed of the Paluxy River in Dinosaur Valley State Park, near Glen Rose, Texas. There are tracks from three different types of dinosaurs in the park area, and this photo pictures tracks from at least two of them. The dinosaurs that have been identified as having lived in the area are acrocanthosaurus, pleurocoelus, and iguanodon. The water is clear enough to afford a good view if you are up to the hike to reach them.