The hillfort of As Muradellas Nature · Lubián, Sanabria, Zamora Image of Lubián, not of the place itself. The castro (hillfort) of As Muradellas is a deserted Iron Age settlement located in the municipal district of Lubián (Zamora), on a promontory formed by a meander of the río Tuela; it occupies high ground between the Sierra Segundera and the Sierra Gamoneda. It was inhabited between the 4th and 2nd centuries BC, with occupation in the 3rd century BC, probably by an Astur population devoted mainly to livestock farming, in a climate somewhat colder and wetter than today's. Its most distinctive feature is the defensive system on the eastern flank, the only side with easy access: a field of driven stones to hinder cavalry, and two parallel ditches, in addition to walls. Since November 1994 it has been protected as a Bien de Interés Cultural (Spain's highest level of heritage protection), with the category of archaeological zone. The municipality, with six hamlets, today has 296 residents. Photo: No machine-readable author provided. Jervert assumed (based on copyright claims). (Public domain) What to see and do in Lubián