Kjetil Loftsgarden is an associate professor at the Museum of Cultural History, University of Oslo. His main area of expertise is iron and iron production, trade, meeting- and marketplaces, as well as the societal consequences of climatic and environmental changes in Iron Age Scandinavia. He is currently leader of the project ‘Eidsborg rock – production and trade of whetstone in the Viking Age’ (2023-2027), funded by the Norwegian Research council.