The death was in the half hitch. There had been some debris movement in the half hitch which left a very fine powder of silt everywhere that was easy to stir up. Their dive computers showed them going to the half hitch and then turning around and going into the cave,then back. It was thought they kicked up a lot of silt at the half hitch and thought they thought it shifted again,so they to get through there with gear removal in zero viz. Also some repaired line in the half hitch allegedly had a line arrow facing the wrong direction. When ever I enter the half hitch I look at that sand slide carefully for recent movement.


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