Hillfort of Castañoso Nature · A Fonsagrada, Fonsagrada, Lugo A pre-Roman fortified settlement set on the spur that separates the Covas and Valdobarreiro streams; it is visited by way of a waymarked route of some six kilometres starting from the hamlet of the same name. Photo: Nemigo (CC0) What to see and do in A Fonsagrada