Old SawMill

This is an old mill about 10 miles from where we live. There are hundreds of blip opportunities in and around it. I chose this from the 44 pics that I took today. I don't know what these extrusions were for. They are on the external wall on the river side and there are no corresponding ones on the inside, so they don't appear to be a support for another floor.
The old mill wheel is visible but not really accesible to blip as it's on the side of the building and seems to have been powered via a sluice from the top. How the water got up there in the first place I don't know. I've seen no signs of a pump room but ther is no ready access to the lower floors to check. You can still see the original circular saw but I didn't want to risk the floorboards in that room and couldn't get a satisfactory blip through the window. I know this is a long explanation but this place raises many questions to which I do not have answers .....yet.
Better large.