Il patrimonio rurale quale testimonianza di una civilita particolare sancita dalla Carta di Venezia. Le tecniche avanzate di rilievo per documentare e conoscere

A particular area of loss of cultural value is that of rural heritage, in which the phenomenon of abandonment tied to social and economic changes has generated a landscape dotted with ruins that inexorably increase. It is a challenge that, at times, appears as a race against time, to be faced with a cognitive process supported by a technology that allows to acquire data with rapidity and safety, in precarious context, and that could enable us to maintain a set of data usable even in later phases. From the digital acquisitions we have to seize the peculiarities of the architectonical contexts, by revealing their possible vulnerabilities and the hidden construction techniques. The case study proposed exemplifies the benefits introduced by some principles of the Venice Charter, with the extension of protection to the dimension of peculiar "landscape" environments, even confirmed by recent decrees of constraint. The example of the 3D documentation of vaulted systems has saved some pieces of knowledge which have directed the analysis and possible scenarios in the rebuilding of structures. Keywords Rural Heritage, Monitoring of collapses, Survey.