The incredible dinosaur wall of Bolivia

 Spread across a limestone slab a mile long and almost 300 feet high, this great wall at Cal Orcko near the city of Suvre, Bolivia, reveals more than 5,000 dinosaur footsteps, with 462 discrete trails.

Yet sixty eight million years ago (give or take a million or two) this immense vertical wall was a muddy plain across which dinosaurs danced.  Although the last verb is not one usually common in describing events from the Jurassic period, puzzled palaeontologists have call it the Dinosaur Dance Floor because many of the prints are positioned in strange patterns.

Almost all of the prints are so well preserved that the individual species which made them can be ascertained.  About eight species have been recognized.  They include the Ankylosaurus, Tyrannosaurus Rex, Titanosaur and Carnotaurus.