In an eerie retelling of the Arthurian legend of Excalibur, archaeologists have found a 3,300-year-old sword at the bottom of a lake. The weapon was found during an underwater excavation at Lake Mezzano, a small volcanic lake in central Italy, where it had been submerged for millennia with its blade still sharp. Experts believe the sword, which dates to around 1300 BC, may have been deliberately deposited as part of a ritual offering, a practice already linked to several Bronze Age European sites. The discovery was announced by Italy's Superintendence of Archaeology, Fine Arts and Landscape for the Province of...