Built with confidence and dexterity on an enormously challenging site dominated by a massive basaltic outcrop, this ingenious house makes a virtue of its rocky relationship by putting the massive slab at the building’s core. The three floors of serene rooms are remarkable for their subtle finishing and dramatic angles and the play of light within them. The building sits lightly on its site, enfolded by its metal skin and anchored to the rock on a manner that is at once alpine-hut-like and enduringly robust.