'We were freaking out': Scientists left 'flabbergasted' by detailed dinosaur footprints covering a cliff in Alaska

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A 20-story rock face in Alaska known as "The Coliseum" is covered with layers of footprints belonging to a range of dinosaurs, including a tyrannosaur.

'We were freaking out': Scientists left 'flabbergasted' by detailed dinosaur footprints covering a cliff in Alaska : Read more