The Fens, also known as the Fenlands, is a coastal plain in eastern England. This naturally marshy region supports a rich ecology and numerous species, and helps absorb storms. Most of the fens were drained centuries ago, resulting in a flat, dry, low-lying agricultural region supported by a system of drainage channels and man-made rivers (dykes and drains) and automated pumping stations. There have been unintended consequences to this reclamation, as the land level has continued to sink and the dykes have been built higher to protect it from flooding.