Matanuska Glacier

Matanuska Glacier stretches roughly 27 miles through the Chugach Mountains and ends in a wide terminal zone visible from the highway. The surface shows open crevasses, grey moraine bands, and deep blue ice formations that shift with the seasons.

The ice field formed during an ice age thousands of years ago and began shaping the valley below. Over centuries, the front edge held roughly the same position while the ice mass slowly moved downhill.

Guides from nearby communities walk visitors across the ice, pointing out crevasses and blue bands that form under pressure over centuries. These tours often pause at spots where meltwater carves channels through layers of compressed snow.

Access points lie along Glenn Highway near mile marker 102, where local operators provide gear such as crampons and helmets. Walking on the ice requires sturdy footwear and caution during changing weather, which can shift quickly in the mountains.

The ice creates its own microclimate by pushing warm valley air upward, often producing clearer skies and milder temperatures than the surrounding lowlands. Visitors frequently notice less wind here than along the roadway below.