The sandstone of the Sierra del Almuerzo Nature · Aldehuela de Periáñez, Frentes, Soria The Sierra del Almuerzo provides a much prized sandstone that was traditionally quarried in this municipal district situated at 1,053 metres of altitude, and that is recognisable in the ashlars of the buildings of the neighbouring villages. Photo: User:Daviddemiguel (Public domain) What to see and do in Aldehuela de Periáñez