Named after its stone cladding, the Slate Cabin takes inspiration from the rocky Welsh landscape. The exterior's simple rectangular form is covered in reclaimed slate tiles taken from local farms. In contrast to its dark facade, the interior — including the walls, built-in table and chairs, cabinets, and shelves — is sheathed in light birch plywood. The compact retreat consists of only a bedroom, bathroom, dining room, and a kitchen with wood-burning stove. To give the compact interior a spacious quality, loads of light is brought in by a series of windows lining the ceiling, while additional glazed openings in the walls frame in views of the surrounding mountains and fields.