Well, it’s morning when I’m posting this anyway. . . . . .
A research team led by Willy Tegel and Dr. Dietrich Hakelberg from the Institute of Forest Growth of the University of Freiburg has succeeded in precisely dating four water wells built by the first Central European agricultural civilization with the help of dendrochronology or growth ring dating. The wells were excavated at settlements in the Greater Leipzig region and are the oldest known timber constructions in the world. They were built by the Linear Pottery culture, which existed from roughly 5600 to 4900 BC.
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The four early Neolithic wells were constructed from oak wood. In addition to the timber, many other waterlogged organic materials, such as plant remains, wooden artifacts, bark vessels, and bast fiber cords, as well as an array of richly decorated ceramic vessels, have survived for millennia hermetically sealed below groundwater level. With the help of dendrochronology, the scientists were able to determine the exact felling years of the trees and thus also the approximate time at which the wells were constructed.
I suppose given my recent post I should probably add some snarky note about it being “hermetically sealed. . . . .until the archaeologists got a hold of it”, but there’s no indication of why it was uncovered so I shall keep the snark to a minimum. And you’ve got to figure this was no beginner’s first attempt so the technology undoubtedly goes back much further.