This is how a load of imaginative people spend their weekends, dressing up an pretending to kill each other. This happens not only in Sweden, Norway and Denmark but also Iceland, England, Germany and the USA and many other countries where the Vikings roamed a 1000 year ago and folk still like to remember and re-enact the pillaging and slaughter. I’d prefer a good book myself, though there must be something in it as they look like they’re having a ton of fun.
This great photo is by Krys Krystkowiak, a very fine photographer, who uses a Canon 5D , and you don’t get much better than one of those. He has a whole collection of Viking pics on Flickr.