Digital vs. historical cartography for studying archaeological sites: a case study from Corsica

In this paper we wish to query the meaning of the use of computer technologies to study historical cartographic documents in an archaeological project. To illustrate some of the possible applications of IT and historical cartography within the context of an archaeological project, a case study from Corsica will be presented. On-going interdisciplinary research on the site of the Roman town of Mariana is taken as an example for discussing problems and possibilities offered by the GIS-integration of historical maps, old site plans and early aerial photographs with new survey data and excavation evidence. Some issues about digitalization of old cadastral and topographic maps are addressed, while interpretative mapping is evaluated. The resulting hypotheses and models concerning the exact location of old “excavations” and the major topographic elements of the Roman town and its hinterland (circuit wall, gates, public centre, road network, cemeteries, land division) procure new guidelines for on-going fieldwork on the site and for the management and valorisation of the archaeological and landscape values of the ancient town area.