Thick ice under trail at lower end of Hotcake Slough No flash player has been set up. Please select a player to play Flash videos. Video not playing? Update your browser or download the video clip Sam Demientieff talks about how there is thicker ice under the trail than under fresh snow. Process Observed: Open Water (Hidden)Ice ThicknessSnow Insulation Date Process Observed: Saturday, March 31, 2012 Galleries: Main part of the Tanana River at lower end of Hotcake Slough Gallery