The oldest wooden structure that has survived to this day has been located in a Neolithic pit, discovered during the works of a road in the Czech Republic (a highway in the East Bohemian region, near the town of Ostrov) .
Archaeologists excavated a wooden water well structure with a square base area of 80 by 80 centimeters and 140 centimeters high.
Oak
The wooden anatomical identification of the well fill fragments shows mainly oak and hazelnut. The trees used were felled in 5256/55 BC The design consists of grooved corner posts with inserted planks .
This type of construction reveals advanced technical knowledge, as the shape of the individual structural elements and the preserved tool marks on their surface confirm sophisticated carpentry skills .
Dendrochronology , the scientific method of studying tree rings, [can determine the age of archaeological sites]
Under ideal conditions, the trees grow rapidly and form wide annual rings. During droughts, in-season cold, and other unusual conditions, growth slows and rings are narrower.
Thus, thanks to the combination of the width of the rings, the chronology of the Czech oak has been significantly extended to 5481 BC. C.