Naked, beheaded, and tangled, the bodies of 51 young men -- their heads stacked neatly to the side -- have been found in a thousand-year-old pit in southern England, according to carbon-dating results released earlier this month. The mass burial took place at a time when the English were battling Viking invaders, say archaeologists who are now trying to verify the identity of the slain. The dead are thought to have been war captives, possibly Vikings, whose heads were hacked off with swords or axes... Many of the skeletons have deep cut marks to the skull and jaw as well...