Early Neolithic Water Wells Reveal the World's Oldest Wood Architecture
(A) Temporal distribution of 147 oak ring width series, indicating the lengths of the individual tree-ring sequences, and the youngest felling date per well construction, based on the presence of waney edges (annually precise) or sapwood (±10 years). The inset shows a 3D reconstruction of the wooden lining of the well from Altscherbitz displaying each tree using a different color. (B) The Expressed Population Signal (dotted line grey) and the inter-series correlation (dotted line black) calculated over 50 years lagged by 25 years along all of the individual samples. (C) Single ring width measurements (green) and their mean (red). (D) Absolute dating of the new Saxon oak chronology (red) against the reference chronology from the Main River Valley  after 10-year low-pass filtering (r = correlation coefficient, TV = T-value, GL = Gleichläufigkeit).