Acrocanthosaurus footprint revealed in shallow river, surrounded by debris.
A close-up view of an Acrocanthosaurus footprint under the water of a shallow river. The footprint and the ground are yellow. Inside the footprint, there are tiny pebbles as well as two normal-sized rocks. Along the surface of the water, there are thin pieces of wood that are floating on the water. On the far right side of the footprint, the ground gets deeper and is filled with small green specks.