Abstract
In the Scandinavian countries, Norway and Sweden, increased weathering rate of cultural property such as rock carvings, mostly dated between 4200-500 BC, has become a serious problem. Observations during the last decades have shown severe deterioration due to a combination of natural and anthropogenic influences. In order to study the rate of weathering of the rock carvings an interdisciplinary group from Norway and Sweden was formed to carry out environmental monitoring on one site in each country, one of them belonging to the UNESCO World Heritage List. The results from this investigation have elucidated the problems concerning weathering of silicate rock surfaces and the different parameters causing the deterioration. Based on the obtained results some counter measures in order to preserve the rock carvings have been tested.
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