Researchers have unearthed a Bronze Age slab which they believe is the oldest 3D map of an area in Europe. The map, a 2m by 1.5m slab, was uncovered in 1900, BBC reported. After being forgotten for decades it was discovered gain in a cellar in a castle in France in 2014. The rock has been named the Saint-Bélec Slab and is said to have been created in the early Bronze Age, between 1900 BC and 1650 BC. In 1900, it was unearthed by local archaeologist,Paul du Chatellier, when he was exploring a prehistoric burial ground in Finistère. The map was then moved to a private museum and was later acquir…