Watercress Line (The), an Attraction in Alresford, Hampshire. Search for Hampshire Attractions. The route takes you along 10 miles of steeply graded track through beautiful Hampshire scenery, passing two intermediate stations - Ropley, which is the railway's engineering base; and Medstead and Four Marks, the highest station in southern England. The steep hills either side of Medstead gave rise... information-britain.co.uk