An archaeological dig on the Danish island of Bornholm has turned up a small stone, in two pieces, with scratches in a criss-cross pattern that has led researchers to conclude it’s a 5,000-year-old map of the island.
An archaeological dig on the Danish island of Bornholm has turned up a small stone, in two pieces, with scratches in a criss-cross pattern that has led researchers to conclude it’s a 5,000-year-old map of the island.