Dólmenes de La Sierrezuela (Posadas) Nature · Posadas, Valle Medio del Guadalquivir, Córdoba Image of Posadas, not of the place itself. Two megalithic funerary monuments of the covered-gallery type have been documented at La Sierrezuela, evidence of settlement in the area during the Metal Ages; part of the municipality's mountain range is recognised as a biosphere reserve. Photo: CFA1877 (CC BY-SA 4.0) What to see and do in Posadas