 A stump of Douglas fir, over six feet in diameter, stood on a shell heap eight feet below the surface which contained human remains.The tree indicated the top layers of the shell heap were more than 500 years old.The material brought back included carved and sculptured pipes, stone mortars, pestles, and sinkers, bone implements used on spears, deer antlers used as handles, stone adzes differing from those found anywhere else, bone needles, shell ornaments, and the like.