Grizzly

In Denali National Park and Preserve

More cracks

Longitudinal crevasses on the Castner Glacier. These cracks often form where the glacier valley widens, increasing the tensile stress on the ice and run parallel to the flow direction. These are less common than transverse crevasses that run perpendicular to the flow direction and often occur where the glacier steepens (you can see a few transverse crevasses on the upper right side of this image). More photos of the Castner Glacier here.

Dreamy Forest

Northwestern Glacier

Northwestern Glacier, a tidewater glacier near Seward, Alaska. Kenai Fjords National Park.

Overcast Autumn

Fall day in Denali National Park & Preserve.

Savage River

Double Mountain and the frozen Savage River in Denali National Park & Preserve.

Grizz

Foraging for soapberries in Denali National Park & Preserve.

Light through the forest

A cold morning in Fairbanks, Alaska.

Look what the second day of autumn brought us!

Nearly 7 inches of snow and a nice sunset - Fairbanks, Alaska.

The End of Autumn - in Summer

A few miles of hiking on trail before darting off into the backcountry for another ten miles of foot-pounding ridges, saddles, and peaks. It was a gorgeous day in the White Mountains of the Alaska Interior. Fall foliage and plenty of snow. No signs of humanity as far as I could see. Except for a spoon. I found a spoon at the top of one of the peaks.

Autumn hits Murphy Dome

Short season up here on Murphy Dome

Hayes

South Hayes and Mt. Hayes (13,832 ft.) appear over a ridge on Moby Dick (12,360 feet) in the Eastern Alaska Range.

Arctic Ground Squirrel

These guys are fun to watch, and they make wonderful snacks for grizzly bears! They are also extreme hibernators, letting their body temperatures drop below freezing while their blood stays liquid, possibly through supercooling since they don't possess anti-freeze proteins.

Polychrome Overlook

The shuttle buses in Denali National Park stop constantly for wildlife, this is one of the few stops that is made purely for the view. Braded rivers, kettle ponds, and glacial erratics dot the valley. This was one of the only days I've been there that the glaciers were visible. (Full version in my landscapes gallery: http://photos.lwpetersen.com/Nature/Landscapes/i-BLs5SGd)