Construction cut for brick wall (65). Same truncation event as [71] to south. Cuts (66) and rubble layer (70). Vertically truncated by modern existing concrete / building and the original construction level of the wall has been destrroyed.
North - south orientated brick wall. Vertical truncation by modern construction makes interpretation difficult, especially in small eval trench. To south it has collapsed into drain (72), but appears to continue to south in section. East - west aligned buttress on west side of wall appears to be part of same build, but seems along north and sour faces hint at possibility of it in fact being an earlier build. Bricks and mortar look superficially similar to the main wall and coursing appears to be continuous over the top of both sections. - although heavily truncated.
I think foundation trench [64] was dug, revealing earlier wall (68) - which was truncated. The small buttress feature, which is at least 1 course deeper than the rest of the well, was built against (68) to shore it up. Then the rest of of N-s wall (65) was built, bridging over drain (72).
Date of wall is unclear, could be part of late 18th century construction of cresent, or could be an earlier phase of construction.
Fill of construction cut [64]. Contains lots of building debris. Poorly defined extent in places. Vertically truncated by construction of existing 1960s building and therefore construction level of construction cut is lost.
