Some things appear where you least expect them. Although dinosaur tracks have been discovered the world over, climbing up a near vertical wall in a Bolivian quarry? Zooming up hundreds of feet towards the skies?
Yet here they are. Spread across a limestone slab a mile long and almost 300 feet high, this great wall at Cal Orcko near the city of Suvre reveals more than 5,000 footsteps, with 462 discrete trails.