Classified in 1943 as "National Monument", the "Painted Fraga Cachão of Rapa" is located on a mountain basin of the Upper Douro, where a wet granite outcrops and vertical.Quando in the second half of the nineteenth century, is analyzed, the European level, the controversial topic of artistic manifestations of our prehistoric ancestors, the study of rock paintings of the Cachão Rapa, in the County of Carrazeda the Ancients, has revealed it will be quite relevant. Although known since at least the eighteenth century was J. Possidónio N. da Silva (1806-1896) who, in 1878, notified his fellow members of the Royal Association of Architects and Civil Archeologos Portuguese (re) discovery of a shelter "[...] with several ornaments at the foot of the mountain of alvaiazer." a cliff surface located in Linhares zone Rapa overlooking the tunnel. Obtained, then the copy of the figures depicted on its surface in order to dispatch in 1885, the French Association for the Advancement of Sciences in Grenoble, to be formulated a detailed scientific advice on its possible significance. And, although is not completely convinced of his theory, the hypothesis being put before the figuration of any armed conflict established between Roman soldiers and communities Lusitania, as likewise equated the possibility of the cryptograms have been carried out by a population aportada the Iberian Peninsula in times much more indented. He could not, however, theorize its origin and meaning of their own signs painted on the stone, why called to the assistance of members of Congress sponsored by the Association Française pour l'Avancement des Sciences in Grenoble, in 1886, even insisting on its derivation exogenous. Although this first attempt at scientific approach to the site, Cachão seems to have been forgotten for a long time and only rediscovered in 1930, this time by the hand of the archaeologist J. N. C. Santos Junior, who noted the presence of geometric figures executed in black (or dark blue) and red, apparently devoid of any order compósito.Estamos because, in the presence of a cliff painted, dominated the geometric configuration predominantly rectangular and circular , some of which may be interpreted as human representations, highlighted here by its obvious styling, some may be seen as very human representations outlined. In addition, there are several elements within sectioned by crossed lines, to form a sort of staggered pattern. [AMartins]

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