MEGAPIXEL

Gravity-defying dinosaurs!

Sixty-eight million years ago, dinosaurs were able to walk up a vertical rock wall. Or so it seems. Today, the 100-m-high and 1.5-km-long limestone wall of Cal Orcko in Bolivia is covered in dinosaur footprints left by at least eight different dinosaur species on a lake shore. Alternating dry and wet weather subsequently dried them out and covered them in new mud. Finally, geological forces pushed the prints upwards, so a baby Tyrannosaurus rex and others are now “climbing” the wall.