Bergen såg jag vittra i tidernas lek

Sammanfattning: In this dissertation, rock art from three rock carving sites, Ekenberg, Himmelstalund and Hageby, in Norrköping are analyzed in search of traces of weathering through digital documentation techniques such as Structure from Motion, laser scanning and photography. Rock art faces threats daily and weathering, which is a natural process that entails the gradual destruction of rock mineral. This process is accelerated by human presence. It is possible to distinguish between distinct types of weathering and their related causes. Often it is possible to slow down the process. Weathering is largely a consequence of chemical and mechanical abrasion, which is most effectively counteracted by covering the rock art surfaces. Another measure is to prohibit people from walking freely in the area, which opposes the idea that cultural heritage should be available to all.