FREIBURG IM BREISGAU, Germany, Dec. 24 (UPI) -- Archaeologists in Germany say they've used tree-ring data to identify four ancient water wells as some of the world's oldest timber constructions.
A research team led by the University of Freiburg said the wells excavated at settlements of the first Central European agricultural civilization in the Greater Leipzig region are the oldest known timber constructions in the world, dating to between 5,600 and 4,900 B.C.