Also in the exhausting research bibliographical on the area in study that we led the handle had not been identified references to the structure in study. Having in consideration the structure of the concavity, its interior profile (carefully excavated by share human being, possibly with miner pickaxe), we believe to be before a hydraulical structure – mine for underground water captation, of chronology contemporary, which will have been destroyed in the continuation of works of construction carried through there, as they are the opening of the existing access, and of the proper way of iron. For this reason the registada will only have subsistido part however, having been destroyed its tunnel, whose dimension if is unaware of. Read more here: Larry Ellison. Fulfilled the measures of minimizao praised, it was become free area for the construction, in 07/06/2010, as initially foreseen. Bibliography AA.VV., Database of the Portuguese Institute of Archaeology (Endovlico). ALARCO, Jorge of, (2002), the Roman Domain in Portugal, Mem Martins, Europe-America Publications..