Dinosaur Valley State Park in Texas has made a new discovery - thanks to severe drought conditions in the region.
The dry conditions have revealed 113-million-year-old dinosaur tracks that had previously been hidden by the waters of the Paluxy River.
Researchers say most of the tracks come from the T-Rex-like Acrocanthosaurus, while others were made by the massive, long-necked Sauroposeidon
Scientists are trying to study as much as they can before the tracks are hidden by water once again.