When people think of Denali National Park, they frequently think of the scenery, mountain, glaciers, and charismatic megafauna. But most people don’t realize that nearly 70 million years ago, Denali was home to the greatest megafauna that has ever walked the earth: an assemblage of dinosaurs that lived year-round in the sub-arctic environment. Join National Park Service geologist Linda Stromquist to find out more about Denali’s dinos and the new understandings they’ve given researchers about the distribution and environment of these animals all across Cretaceous Alaska.