Using axe to test water depth in Mo's 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 Knut Kielland uses an axe to test the water depth in Mo's Slough. Process Observed: Water Depth Date Process Observed: Friday, February 12, 2010 Galleries: Mo's Slough 1 Gallery