The Remarkable Dinosaur Footprint Wall
Located 3 miles (5 km) from Sucre, Bolivia is Cal Orko, an imposing limestone slab 0.9 miles (1.5 km) long and over 328 feet (100 m) high. On this steep face with an inclination of 72 degrees, visitors can look back in time to when dinosaurs roamed the Earth over 68 million years ago.
At Cal Orko you will find 462 distinct dinosaur tracks from at least 8 different species, totaling an incredible 5,055 dinosaur footprints. So how do thousands of dinosaur footprints come to be, on a seemingly vertical rock face hundreds of feet high? The location used to be the shore of a former lake, that attracted large numbers of dinosaurs.
The creatures’ feet sank into the shoreline in damp weather, leaving marks that were solidified by later periods of drought. Wet weather then returned, sealing the prints below mud and sediment. The wet-dry pattern was repeated several times, preserving multiple layers of prints. Tectonic upheaval then pushed the flat ground up to the brilliant viewing angle that it is today.
Oldest Footprint Ever Found
This fossil footprint found near Ileret, Kenya, is 1.5 million years old. These footprints are the oldest ever found of the human genus.
The Rare Gemstone Ammolite
This dazzling iridescent fossil of an 80 million year old ammonite measuring two feet in diameter was discovered near Alberta, Canada and is a particularly rare example of an ancient sea creature that went extinct at the same time as most dinosaurs. The spectacular coloration is the result of millions of years of high temperatures and pressures acting on the animal’s shell to create a gemstone known as ammolite.