Great Drain. Elliptical Tile Drain. Looking north. Vertical drain from west and amphora fragments. Note that they rise above cover slab in the background. A = vertical drain, b = drain from west, c = drain ... AMS Horizontal (normal) ... Great Drain. Elliptical Tile Drain. ... Vertical drain from west and amphora fragments. ... A = vertical drain, b = drain from west, c = drain from east.
