View of Denali in early morning sun with fireweed in the foreground, Denali National Park and Preserve, Interior Alaska, Summer.

View of Mt. McKinley on a sunny day from Eielson Visitor Center with a descriptive panel of the Alaska Range in foreground, Denali National Park and Preserve, Interior Alaska, Summer.

View of Mt. McKinley and the Thorofare River and Alaska Range, Denali National Park and Preserve, summer, Panorama.

Tourists on bus view a grizzly bear laying the on the side of the park road, Denali National Park and Preserve, Interior Alaska, Summer.

Scenic view of Mt. McKinley with the Denali Hybrid Bus shuttle in the foreground in Denali National Park, Interior Alaska, Summer, USA.

Scenic autumn view of Mt. McKinley and Wonder Lake partially covered with ice, Denali National Park, Interior Alaska

Hiker on a hillside in front of Mt. McKinley and Muldrow Glacier, Denali National Park, Interior Alaska, summer

Scenic autumn view of Mt. McKinley and Wonder Lake partially covered with ice, Denali National Park, Interior Alaska

Hiker on a hillside in front of Mt. McKinley and Muldrow Glacier, Denali National Park, Interior Alaska, summer

Hiker on a hillside in front of Mt. McKinley and Muldrow Glacier, Denali National Park, Interior Alaska, summer

Scenic autumn view of Mt. McKinley and Wonder Lake partially covered with ice, Denali National Park, Interior Alaska

Scenic panorama view of Mt. McKinley and the Thorofare River Valley in Denali National Park, Interior Alaska, Fall, USA

A male tourist photographs Mt. McKinley and Thorofare Pass from Stony Dome in Denali National Park, Interior Alaska, USA.

Scenic view of Mt. McKinley from Eielson Visitor Center with a tourist information board in the foreground in Denali National Park, Interior Alaska, Summer, USA.

Blue Bell wildflowers and the Alaska Range on a sunny summer evening in Denali National Park and Preserve, Interior Alaska

Bull Caribou feeding on Stony Mound in summer in Denali National Park in Interior Alaska

View of Mt. McKinley on a sunny day from Stony Overlook, Denali National Park and Preserve, Interior Alaska, Summer.