Experts working on a project to date Wales' oldest buildings by studying tree rings believe they may have found the country's oldest house. A cow shed in Llanrwst, Conwy has timbers dating to before 1402, the date of the previous oldest house. (photo)
Dendrochronology "measures the variation in width of a tree's annual growth rings as influenced by climatic conditions." The cow shed, near historic house Plas Tirion, not only has timbers dating to the 14th century, but includes use of a cruck frame - a tree trunk used to support a roof.
Since the project began, more than 200 properties have been studied, with around 60 using dendrochronology to date the buildings.