At www.bbc.co.uk/news/uk-england-lincolnshire-35008564 … excavations for a new building in the grounds of Lincoln University have turned up a Mesolithic camp site dating back up to 11,000 years ago. It appears to have been a place where flint microlithic blades were being made, over several generations. Hundreds of microliths – and flakes of flint from cores (nodules) have been dug up, dating from the early Holocene. Lincoln is not far from the Fens and at one time was virtually an island. In the early Holocene it would have been part of the extensive area known as Dogger Land, fairly flat with lots of rivers, streams and lakes.