Rare 5,000-year-old crystal dagger is uncovered in Prehistoric Iberian megalithic tomb in Spain

Ancient tools that once belonged to prehistoric civilizations have been found all over the world, but a discovery in Spain is unlike those traditionally made of stone or flint. A team excavating the megalithic tomb of Montelirio tholos in 2007 through 2010 uncovered a dagger formed from rock crystal that experts say is the ‘most … Read more