Dec. 16 (UPI) -- More than 16,600 footprints left by carnivorous dinosaurs of different sizes that walked, ran and even swam about 66 million years ago have been identified at the Carreras Pampa site inside Torotoro National Park in central Bolivia, making the country home to the world's largest known concentration of theropod tracks.

Legend once had it that the huge, three-toed footprints scattered across the central highlands of Bolivia came from supernaturally strong monsters — capable of sinking their claws even into solid rock.