We went on a photowalk and ended up on the low-lying meadows that are cut through by the road that is named Fen Causeway.
Fen Causeway is a link road in Cambridge that was constructed in the mid-1920s to ease the pressure on other roads in the city. There was a lot of pubic objection to the road at the time because it intruded into what was a wild fen area.
There is an older Fen Causeway. It the name for a Roman road that runs from a junction with Ermine Street and King Street near Peterborough across the Cambridgeshire and Norfolk fens.
The route that the road took can be seen from the air. I googled for aerial photos of it and there are pages of them. Roman roads are easy to spot because they are straight as a die. Many times I have been driving along and realised I must be driving along the route of an old Roman road. They are very obvious.
Ermine Street ran from London to York in the north of England via Lincoln. It is about 200 miles long and is probably the most famous Roman road. I wonder whether teachers still teach of its existence?
You can see the low-lying ground here. At one time the fens stretched for many miles. That is until they were drained in the 1600s, mostly by an enforced workforce of Scottish prisoners who had fought on the side of Charles II in the last of the English Civil Wars.