Garden walls at Tan-y-bwlch

The garden walls which were apparently built to enclose orchards and a kitchen garden, are constructed uniformly in 230-250mm thick in-situ no-fines concrete with a crushed slate waste aggregate, laid within shutters in lifts of c60cm. They stand on average 3m high but in places up to 4m, and form a large sub-rectangular enclosure, approximately 10m x 12.5m, subdivided at the N end by cross walls forming two smaller enclosures. The walls are without provision for linear movement, and daywork joints are not clear, but all the walls have occasional door openings where timber doorframes have been cast in, and straight and low triangular timber lintels. On the N side the wall is on the edge of a river terrace, thus has two small buttresses of the same material, but the walls are otherwise not horizontally restrained. At the SW corner, where the wall approaches the NW corner of the farmyard N range, there is an attached small stone-built structure containing a privy and boiler room, with a slate roof, and on the NE corner of the gardens a small rectangular structure, now roofless, outside the line of the walls. The walls have toppled in places, probably due to wind pressure, but have generally survived remarkably well.