The agency's director, Kristin Huld Sigurdardottir, says only 20 swords of this age have been discovered in Iceland before, making it a significant find. It didn't take much effort on the hunters' part, though. "It was just lying there, waiting to be picked up - it was obvious and just lying there on the ground," one of them, Runar Stanley Sighvatsson, tells Iceland Monitor . It's believed the sword dates back to at least the 10th Century, and may have been placed in a pagan grave, the website says.