Cornice triggered avalanche near Cooke City. December 21, 2017. Photo: B. Fredlund Advisory Year 17-18 Forecast link: GNFAC Avalanche Forecast for Sat Dec 23, 2017GNFAC Avalanche Advisory for Sun Dec 24, 2017Cooke City, 2017-12-22Access other image sizes:Very Large 1200pxLarge 480pxMedium 220pxSmall 150pxOriginal