Historians use tree rings to find old buildings in Wales

A building being used as a cow shed in Wales may date to the 1300s, making it the oldest domestic building in Wales. The date is being determined by studying the tree rings in the roof rafters.

The discovery is part of a larger project to use dendrochonology to survey the architechtural history of Wales, especially in the Tudor and Jacobean eras. They have dated 60 buildings so far.

The current oldest known house in Wales dates to 1402, but there are other buildings, such as churches, that are much older.