Refrozen area along edge of sandbar across from Riverboat Discovery camp Refrozen area along the edge of the sandbar across from the Riverboat Discovery camp that had been a turbulent whirlpool of water one week earlier. Process Observed: Open Water (Refrozen)SandbarTurbulent Water Date Process Observed: Saturday, December 16, 2006 Galleries: Sandbar across from Riverboat Discovery camp Gallery