Terrestrial laser scanning (LiDAR) as a means of digital documentation in rescue archaeology: Two examples from the Faynan of Jordan

Traditional rescue archaeology has focused on the rapid excavation or the cursory documentation of endangered archaeological sites, typically in urban settings. However, when the archaeologist is in remote field situations and encounters an endangered site or a recently exposed robber´s pit, little documentation is typically possible in the short time available to pursue such fortuitous projects. This leads to the loss of a significant amount of potentially useful cultural heritage data. With the advent of new point cloud technologies, more data can now be collected to preserve endangered sites prior to, or even during, their destruction. Over the 2011 field season of the University of California, San Diego´s (UCSD´s) Edom Lowlands Regional Project (ELRAP) in the Wadi Faynan of Jordan, two day long rescue archaeology projects, at Khirbat Faynan and Umm al-Amad, were undertaken utilizing terrestrial Light Detecting and Ranging (LiDAR) as their primary documentation tool. Such rapid documentation was possible with the aid of several modifications to the standard laser scanning equipment, which not only allowed the equipment access to the tight spaces these projects entailed, but required that fewer scans be taken than with traditional laser scanning. The use of free-station scanning also significantly decreased the amount of time needed for data capture in the field. However this increased the amount of post-processing and potential human registration error. The data sets created via “Rescue LiDAR” now preserve a detailed record of these two sites. This data would have been lost to posterity had rapid and adaptable scanning technology not been available.