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Redoubt Volcano following April 2009 eruption
Polar bear female and two cubs on the Beaufort Sea, Alaska
Conducting lake surveys on the Kenai Peninsula, Alaska
Greater White-fronted Goose on the North Slope of Alaska
Regions L2 Landing Page Tabs
Repeat oblique photographs of Gulkana glaciers in Alaska. 1967, Unknown USGS photographer. 2016, L. Sass, USGS.
Repeat oblique photographs of Wolverine glacier in Alaska. 1966 image by unknown USGS photographer; 2015 image by L. Sass, USGS.
Allen Bondurant measuring depth to permafrost along a thermokarst lake shore
Crumbling blocks of permafrost along the Beaufort Coast