glacier icefall st elias mountains spills downward

aerial alpine arctic bizarre blue broken canada change climate crack cracked cracks crevasse crisis downward elias environment fissure flow flowing frozen geological geology glacial glaciated glacier glaciology global haines ice icefall icefield icescape icesheet icy junction kluane melt melting mountains mountainside national natural nature park rock rocky shatter spill spilling spills steep surface territory thaw thawing vast warming white yukon