Authors’ CommentThe site is located in a in a mountain area. The client’s brief was simple: a home buried in the ground with low energy consumption. The house is divided into two areas (day and night) articulated by a greenhouse. To the south, it opens to the landscape, the only area not covered by earth. The night area has two children's bedrooms, a master bedroom with dressing room and private bathroom. The living room is an open space type, and it is completely opened to the surroundings, the main piece of the design being a double fireplace.