El Hierro. SOLD one of the most special and unique properties in the world. The only property that has a volcanic tube under it and that reaches the sea. Located on the north side of the island, in the middle of an immense mineral landscape cooled by the marine horizon. The architecture blends with the landscape to fully respect the environment and not harm the environment.The program divides the rooms of the house under the large structural patio housed inside the crater and with the Atlantic horizon as background. The bedrooms are excavated at the end of the white line and under the rotated picture of basalt walls, contrasting the great presence of the diurnal landscape with the will to collect inside during the night.