Ex-situ preservation of exposed painted rock art. Applying photogrammetry and color manipulation.

Raymond Sauvage


Natural degradation of rock art sites possess a major challenge for cultural heritage management. This is especially true for exposed sites with painted art. Conservation measures are in some cases not able to fully stop or reverse continuing degradation, and we may have to accept that some sites will be lost in a near future. Preservation ex-situ in archives may be the only future for these sites. In this paper, we will explore the potential for digital photogrammetry in combination with color manipulation to replace the more traditional means of surveying localities of this type. Examples from the rock-art site at Honnhammer in Tingvoll, Møre og Romsdal County, Norway, will be presented and discussed. Here, digital photogrammetry has been applied for the past two years, as a cost-effective and accurate way to preserve three-dimensional information for the future.