A mother grizzly and her cubs cause a “bear jam” on Denali National Park and Preserve’s 92-mile-long Park Road, open to private vehicles only five days each summer. Most visitors travel the route by Park Service bus, frequently spotting wildlife but rarely catching a cloudless glimpse of the park’s namesake peak.

See more pictures from the February 2016 feature story "How Can 6 Million Acres at Denali Still Not Be Enough?"