(FILES) This file photo taken on February 28, 2017 shows a man standing inside the ruined church of the uninhabited village of Aldealcardo, in the northern Spanish province of Soria. Rural emigration in many areas of Castile region - where the village of Sarnago is located - as well as in Aragon and Extremadura regions was so massive in the 50s, 60s and 70s that their population density now rounds two inhabitants per square kilometer. A similar level to extreme regions such as Lapland or Siberia. / AFP PHOTO / CESAR MANSO