Below is a picture of a strange technology, that maybe some smart person can identify. This is what appears to be a clay or ceramic Archimedes Screw. This is one of several pieces of the devices, which were bound together. They were found on a bluff overlooking the Savannah river, about 10 miles upstream. There was a settlement of people from Austria in the area who immigrated to the region in starting in about 1730. They made a settlement about 100 yards from the river.
By the shape of it I am guessing it is an Archimedes screw, presumably made to lift water. How would something this heavy be supported for turning? I wonder if anyone has heard of ceramic screws of this type being made in Austria or anywhere else?