Despite what many think, people a thousand years ago were not totally filthy.
"We know they took baths during the viking era," says Lena Elfvinge Nixon,"there were saunas in the gardens, people had bathtubs."
She is one of many people in Sweden interested in the viking era, and this week there is a major festival in a field in southern Sweden, where enthisiasts are recreating some of the elements of medieval life.