From: http://home.tiscali.nl/~wr2777/NAP-niveau.htm
Nature Reserves - Holme Fen
Holme Fen NNR is the lowest point in Britain, lying at the most westerly end of the East Anglian fens on the shore of the former Whittlesey Mere. Over many years drainage of the surrounding farm land has caused the peat to shrink. This shrinkage has been recorded by the Holme Fen Post, a cast-iron column that was sunk into the fen in 1852. The column was sunk till its top was level with the peat surface, but it now stands some 4 m above ground level.
Holme Fen NNR is the lowest point in Britain, lying at the most westerly end of the East Anglian fens on the shore of the former Whittlesey Mere.
Over many years drainage of the surrounding farm land has caused the peat to shrink. This shrinkage has been recorded by the Holme Fen Post, a cast-iron column that was sunk into the fen in 1852. The column was sunk till its top was level with the peat surface, but it now stands some 4 m above ground level.
