photo # 18 --

"The first is a view of the top of the tower showing two of the gargoyles. I doubt if they are in use now as there is a drainpipe running down from the tower roof.  You will see the tower walls are built of flints, which are local, although the cornerstones are of stone. Once away from the Chiltern Hills, and some 60 or so miles to the north, there are stone quarries, so
perhaps the stone came from those."