Sight · Denali National Park
Denali’s surging giant and historic northern climbing route
Overview
Muldrow Glacier pours off the northeastern flank of Denali, a massive, land‑terminating river of ice that ultimately feeds the McKinley River. At about 39 miles long, it’s the park’s heavyweight glacier—remote, rough, and more the realm of climbers and scientists than casual sightseers.
Muldrow is a surging glacier. Instead of creeping along at a steady pace, it occasionally lurches forward dramatically. A historic surge in 2021 sent the glacier racing—orders of magnitude faster than normal—and left a maze of new crevasses and broken ice. The National Park Service closely documented the event and continues to monitor it as a living laboratory of glacier dynamics.
Parkwolf’s verdictWhy it’s differentMap
Local know-how
Book a flightseeing tour if you want meaningful views of the glacier.
From the park road, expect to see only the glacier’s distant tip.
Backcountry travel here requires permits and advanced route‑finding skills.
Crossing the McKinley River can be hazardous; plan conservatively.
Post‑2021 surge, crevasse patterns shift—expect routes to change year to year.
Plan your stop
The highest, rockiest slopes around here are a summer buffet for grizzly bears.
Denali Tour Guide
Parkwolf is a GPS audio tour guide for Denali National Park. As you drive, it chimes in with what’s ahead: hidden gems, upcoming stops, history, geology, and wildlife, right through your car’s speakers.
See the Denali audio tour“Fantastic app with many points of information… It’s great to just turn on while you’re driving and it gives you an audio tour of the national Park. We love it!!!!”
Guide
Don’t expect tidewater calving or roadside ice caves; Denali’s glaciers are inland and end on land. From the park road, you’ll only glimpse the tip. The full sweep—medial and lateral moraines, the Great Icefall above, and the fractured “Hill of Cracks”—is best appreciated on a flightseeing tour or by skilled backcountry travel.
Expect long ridges of rock (moraines) riding the ice, debris‑covered lower reaches, deep crevasses, and occasional meltwater pools. The glacier is fed from higher icefalls and tributaries, then bends and flows down‑valley toward the McKinley River, constantly reshaping the landscape as it grinds along.
The ice itself is harsh, but the surrounding tundra and foothills can host caribou, Dall sheep, and birds of prey. Sightings are most likely on the approaches rather than on the glacier proper.
Surges were recorded in the early 1900s, the 1950s, and again in 2021. During the most recent event, the park used modern mapping techniques to track the glacier’s surface changes and motion. The glacier also holds a notable place in Denali mountaineering history as the classic northern approach.
There are no amenities—no parking, no restrooms, no signage. If your goal is to actually see Muldrow in full, book a flightseeing tour. If you plan to approach on foot, secure the appropriate backcountry permits, be fully self‑sufficient, and prepare for rapidly changing conditions on both tundra and ice.
Wildlife
715 sightingsGrizzly BearMost seen around 8 PMSighting map
74 sightingsWolfMost seen around 8 PMSighting map
49 sightingsCanada LynxMost seen around 9 PMSighting map
795 sightingsMooseMost seen around 7 AMSighting map
917 sightingsCaribouMost seen around 7 AMSighting map
405 sightingsDall's SheepMost seen around 7 PMSighting mapSighting maps show where each species has been reported across Denali. Wildlife moves, so no sighting is guaranteed.
Parkwolf’s Denali ranking
The audio tour guide for the drive, plus offline maps, trails, and wildlife heatmaps for when the signal drops.
