The rugged site drops 22m across a 20–50-degree slope. At 6,640 ft above mean sea level, the house lives amidst Douglas Fir treetops; with uninhibited views of the Sierra Nevada. Sliding concrete spine walls slice into the terrain; with fluid living spaces sandwiched between; capped with roofscapes folded to maximise views. The insulated 18-inch concrete walls extend beyond the interior spaces into the slope, providing privacy whilst anchoring the house down. Western red cedar, shou-sugi-ban cladding & triple glazing set against the brutal aesthetics of the board-formed concrete spine walls.