jan 1, 3301 BC - Newgrange is built in Ireland.
Description:
https://en.wikipedia.org/wiki/NewgrangeTowers, Roy; Card, Nick; Edmonds, Mark (2015). The Ness of Brodgar. Kirkwall, UK: Archaeology Institute, University of the Higlands and Islands. ISBN 978-0-9932757-0-8.
Added to timeline:
Date:
jan 1, 3301 BC
Now
~ 5330 years ago