Multi-light photogrammetric survey applied to the complex documentation of engravings in Palaeolithic rock art: the Cova de les Meravelles (Gandia, Valencia, Spain)

Abstract The new phase of study and revision the Palaeolithic art Cova de les Meravelles, as well advances made in field 3D documentation recent years, have motivated a campaign on main panel full tiny engraved motifs. difficulties involved acquiring processing data executed using fine thin engraving techniques indoors, been solved through multi-light photogrammetric survey, photographing surface with five lighting directions, applying principal component analysis (PCA). This procedure has allowed us to obtain large corpus two three-dimensional improve base produced 17 years ago after its discovery. In this paper, we present followed, enhanced results campaign, most significant contributions complex archaeological limits found along procedure.