A 4,573-year-old neolithic wooden peat road near Nieuw-Dordrecht, in the Netherlands, excavated in the 1980s. The peat road was at least 800 metres long, and its construction has been precisely dated to the year 2,549 BC thanks to dendrochronology or tree-ring dating
Preserved in peat, I believe!
Yes, from this r*ddit post:
More info: https://www.dehondsrug.nl/hotspots/veenweg/?lang=en