
Sunset Unmasks Denali’s Vast Dinosaur Tracksite
Scientists in Denali National Park discovered the largest dinosaur tracksite in Alaska, nicknamed “The Coliseum,” containing thousands of footprints from Late Cretaceous dinosaurs. The tracks revealed themselves only under specific sunset lighting, showing a multi-layer record of a river-based ecosystem with giant plant-eaters, predators like tyrannosaurs and raptors, and preserved plant and invertebrate fossils. The site, formed by ancient floodplains and later uplift by the Alaska Range, provides insight into prehistoric northern ecosystems and is now protected as researchers continue study.











