Phys.org

Double axes and coarse pottery reveal connections across the Rhine 5,000 years ago

The Rhine, as the boundary between Western and Central Europe, appears to be a constant feature of European history. As early as the late fourth and early third millennia B.C., the traces of human activity east and west of the river differed. Archaeologists have long concluded that the river was a kind of barrier at that time, just as it has been in more recent centuries.