Viking Graves

OK, the title is kind of a clickbait, because viking was a job about sailing, fighting and plundering, and town of Birka at the island of Björkö was kind of vikingish supermarket, so mostly merchants lived here.

But the island was swarming with vikings, selling all kinds of their loot and local garrisons of the king, so it's possible some of these graves, now seen only by remaining stones, are the viking graves.