Ice edge and open water at upper end of Hadley Island Slough Ice edge and open water below in the slough outlet across from the upper end of Hadley Island Slough that would be a hidden travel hazard if traveling from the other direction. Process Observed: Open WaterIce CollapseTravel Hazard Date Process Observed: Friday, March 30, 2007 Galleries: Slough outlet across from upper end of Hadley Island Slough Gallery