A path around Meldon Reservior in the Dartmoor National Park has been closed amid a dispute between the landowner and the park authority over access rights.
The location near Okehampton is part of a popular circular walk, but at present people arriving in their walking boots
are having to turn back before they can reach its western side, the BBC reports.
It is on private land owned by farmer Philip Heard and the broadcaster said he had been paid £700 a month in the past to allow access, but this has been set for a cut due to new accessibility regulations being introduced.
The old agreement expired at the end of March and a new one has not yet been established, leaving the path cut off.
Meldon Reservoir can form part of a walk that also takes in High Willhays, the highest point in southern England at 2,039 ft above sea level.