Claim: Ravensborg, a type of ringfort, is used to recreate a Viking Age fortification allowing living history enthusiasts to experience Medieval life in a longhouse for one year.
Evidence: Ravensborg is a type of ringfort -- a circular earthen rampart and wood palisade with several buildings within. While not permanently inhabited, the site is used to recreate a Viking Age fortification allowing living history enthusiasts to experience Medieval life in a longhouse for short periods.