Very large cornices exist throughout the advisory area. These cornices are a hazard by themselves but also make great triggers for avalanches like this one. Photo: S. Reznicek Forecast link: GNFAC Avalanche Forecast for Fri Mar 11, 2011GNFAC Avalanche Advisory for Sat Mar 12, 2011Northern Madison, 2011-03-10Access other image sizes:Very Large 1200pxLarge 480pxMedium 220pxSmall 150pxOriginal