Chippenham Fen NNR

One of the best remaining areas of undrained, semi-natural fen in Europe. The fen is peat soil laid over chalk rock, with a layer of clay between. Chalk springs continually well up into the fen. This is a National Nature Reserve and the few paths through the wood are fenced. Dogs must be kept on leads within the reserve. Access to the wood involves a pleasant walk along well signed footpaths, muddy in winter.