PROSPECCIÓN MAGNÉTICA EN EL RECINTO DE FOSOS CALCOLÍTICO DE “EL CASETÓN DE LA ERA” (VILLALBA DE LOS ALCORES, VALLADOLID): REPRESENTACIÓN GRÁFICA E INTERPRETACIÓN ARQUEOLÓGICA

The results of a magnetic survey of the Chalcolithic triple ditched enclosure of El Casetón de la Era (Villalba de los Alcores, Valladolid) are presented here. Some interesting details that were previously unnoticed by aerial photography (multiple entrances, a pit settlement exceeding the limits of the outer ditch, areas strongly magnetized by the action of fire, traces of former fieldsystems, etc.) have been documented. The reasons why some structures, such as the ground plans of many houses, are practically invisible in the magnetogram are also assessed.