Archaeologists found many tools left behind by prehistoric civilisations, many of which were stone-made. However, Spanish researchers have discovered incredible weapons made of crystal. These weapons date back to at least 3000 BC. Also included is a great crystal dagger that would have required tremendous skill to carve.
This incredible discovery was made in the megalithic tombs of Montelirio Tolos in South Western Spain. This huge lot is made out of large slate slabs and is 143 feet long. The excavations were carried out from 2007 to 2010. Five years later, researchers from the University of Granada, the University of Seville and the Spanish University Research Council published a study on crystal instruments. In addition to daggers, they found 25 arrowheads and cannonballs.
The study revealed that rock crystals are commonly found in late prehistoric Iberian sites, but are rarely studied in detail. To understand the purpose of these special weapons, we must first consider the context in which they were discovered.