This is very cool. In Bolivia there is a 25,000 square meter rock face slanting upwards at an angle of 73 degrees, in which are embedded 5,000 tracks of 294 different dinosaurs (six different types) from the Cretaceous period. It obviously was once a lake bed which got heaved upward when the Andes formed in the Teritary period.
More pictures at the link. Found at Neatorama.
hmmm, if i put my foot into mud today, will it get like that or dissapear?
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