Sheltered by the Jaramilla Valley, in the Sierra de Ayllón, and by the Ocejón peak, Campillo de Ranas is a unique piece of Black Architecture in the area. The slate wafers cover walls and roofs and delimit the fields with their dark fences of piles of flakes. Wooden frames and slate slabs open between the stone, the bushes and the valley. The houses adapt to the orography of the land and their groupings are irregular. Within them, a plant and an attic -commonly called the surplus- under the cover; among the different units, the kitchen with its large fireplace and its circular oven, center of heat and meeting of the home, stands out.