Archeologia e Calcolatori Archeologia e Calcolatori
National Research Council Istituto di Studi sul Mediterraneo Antico
Dipartimento Scienze Umane e Sociali, Patrimonio Culturale

Journal established by: Mauro Cristofani and Riccardo Francovich
Editor: Paola Moscati

Authors Siafi, S. -
Title "L’intervisibilité": application à la région de la Tolfa-Allumiere
Volume Archeologia e Calcolatori n. XXI - 2010
Pages pp. 167-183
Publisher Edizioni All'Insegna del Giglio
Subject GIS and cartography
Subject Survey and excavations
Abstract This article focuses on the organization of settlements in the Tolfa-Allumiere region (Lazio, Italy) in the Final Bronze Age and the beginning of the Iron Age. Our research follows a study on the occupation of La Castellina del Marangone, located about five km South of Civitavecchia, and its immediate environment. Many authors have already worked on this topic in Italy, but the originality of the present work is represented by the use of GIS tools to describe the spatial organization of this central Italy region. Each site is located on a Digital Elevation Model (DEM), providing a 2D or 3D view of the landscape. From this DEM, a set of dynamic maps was created detailing the conditions of landscape. In particular, the analysis of the topography makes it possible to evaluate the exposure in a given direction and to analyse notions of distance and costs of travel in order to define the possible existence of networks. The rivers certainly played a key role in the establishment of major trade routes and communication channels between the coastline and the most rugged Tolfa area. By using ArcGIS we can not only determine the overall field of vision but also the line of sight, in order to establish if the landscape obstructed the view between one site and another. Following this analysis and the creation of mapping funds, it was possible to answer the question concerning the reasons that led people to change their lifestyle and occupy the space throughout the Bronze Age.
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