Holme Fen
Explore the largest Silver Birch woodland in lowland England on this walk in Cambridgeshire. There are 657 acres of acid grassland, heath, raised bog, mere and woodland with several bird hides from which to view a wide variety of wildlife. At Holme Post you will be 2.75 metres (9.0 ft) below sea level - the lowest land point in Great Britain.
If you would like to continue your walk you could head to the nearby Woodwalton Fen National Nature Reserve. Holme Fen is located between Peterborough and Huntingdon.
The reserve is part of the larger Great Fen Wetland Project. You can visit the Great Fen information point and try the lovely Dragonfly Trail.
The 2 mile circular footpath is waymarked and includes ponds, woodland and lots of information points explaining the Great Fen project.