Roddons

A roddon is a 'ghost river'.
It is the remnant of a river which has been redirected and has left its mark on the landscape in its previous course.

There is apparently one in the Fens, which runs between Denver and Peterborough and going through March.
They are made of the materials which were deposited as the river dried up. The Little Ouse in Cambridgeshire is a river which met this fate.

They have apparently been mistaken for Roman roads as they are made from aggregate as if they have been laid down in layers.Found the above image on the Cambridge University Department for Sustainability site


Anyone else know anything about these features ?