A peninsula jutting into Morcambe Bay and bounded by the river Kent to the north and outfall from Leighton Moss to the south. Well worth a diversion from the M6 northwards with several good walks. I am sure its really Lancashire, but the top has been bitten off and added to Cumbria and it really isn't part of the Lake District either.
There are a number of official footpaths, but from Silverdale to Jenny Brown's point you have to improvise along the foreshore rocks and mud-flats. NT have a couple of holdings, but the local landowners seem to have been less than co-operative.