Arctic Valley, AK

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Avalanche debris in Avalanche Gully in Arctic Valley near Anchorage, AK
Trigger unknown. Debris up to 200ft wide and ran for 1500ft. Max depth crown estimated at 3-4ft. HS-U-D3-R4. Slab thickness ranged from 25 to estimated 120cm. Thickest part of crown was not evaluated.