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A 300 ft (100 m) high wall found in Bolivia with over 5000 dinosaur footprints, in over 462 discreet trails. This wonderful picture is so full of geology it makes my head spin. If you zoom in on the picture (higher resolution here) you’ll see the dinosaur footprints – there’s over 400 discreet trails. a huge number; the natural question after this, of course is how did they end up sideways ?