Just outside of Surve, Bolivia, there is a town called Cal Orcko. It is home to 462 dinosaur trails imprinted into the limestone of what was once a muddy plain. That's over 5,000 dinosaur footsteps! What makes the prints at Cal Orcko even more impressive is that they can be found on a wall that's nearly 300 ft high. That's right, vertical prints. Don't get too excited about (or terrified) of wall-walking dinos. There's a catch. After sixty eight million years, shifting in the tectonic plates has caused the once muddy plain to turn upright, giving us the El Molino...