The protected plateau of Alcubilla Nature · Alcubilla de las Peñas, Tierra de Medinaceli, Soria Image of Alcubilla de las Peñas, not of the place itself. The municipal district extends flat but at 1,124 metres of altitude, on the northern edge of the Tierra de Medinaceli. Almost half of its eighty-six square kilometres is protected as a habitat of steppe birds. Photo: LBM1948 (CC BY-SA 4.0) What to see and do in Alcubilla de las Peñas