This home occupies a long, narrow sliver of land that stretches from the edge of the town to the coast. A rammed earth wall—made with sand excavated from the site—slices down the middle of the house, guiding occupants from the town side to the beach. A linear skylight transforms the wall’s solid surface into a luminous screen that absorbs the rays of the sun in the day. In the cool night, the wall becomes a heat source, emitting embodied energy captured during the day. At the ocean side of the house, walls dissolve into large windows, fully immersing the home’s residents in the natural world.