 The river now crosses into fen and marshland and passes under the disused railway bed of the line that runs from King’s Lynn to Wolferton and once carried many members of the royal family on their way to Sandringham.The river now meanders in a northerly direction towards The Wash.It then switches into a man-made watercourse that directs it southward through Wootton Marsh towards Vinegar Middle where the river finally runs into the river Great Ouse estuary at Lynn Channel.