Mouth of Pike's Slough Gallery Date Observed: Mar 1, 2011 Video: Click image to play Espen Jervsjo talks about overflow and open holes at the mouth of Pike's Slough and out on the main channel of the Tanana River. Processes Observed Open Water, Overflow Video: Click image to play Espen Jervsjo points out that the Iron Dog Snowmachine Race trail runs on the other side of the river to avoid this area of bad ice. Processes Observed Unsafe Ice