Making Place for a Viking Fortress. An archaeological and geophysical reassessment of Aggersborg, Denmark

Aggersborg, Denmark's largest Viking-age ring fortress, may have replaced a significant earlier settlement with up to 350 sunken-featured buildings (SFBs), challenging previous understandings of its purpose and the broader 'Trelleborg' fortress group. A large-scale geophysical survey using magnetic gradiometry and ground-penetrating radar, combined with legacy excavation data, revealed previously unknown structures and clarified the extent of pre-fortress activity. This approach demonstrates how non-invasive methods can enhance interpretations of scheduled monuments, offering new insights into Viking-age political and tactical landscapes.

Brown, H., Goodchild, H., & Sindbæk, S. (2014). Making Place for a Viking Fortress. An archaeological and geophysical reassessment of Aggersborg, Denmark. Internet Archaeology, (36). https://doi.org/10.11141/ia.36.2