The 1:25000 map shows this path, bounded between fences. The same area can be seen on the right in NS4759 : Knockindon Burn and Glenburn Reservoir. It seemed inconsiderate to try to pass this way with the cow enclosed with me in a narrow space, so I headed in the opposite direction around the reservoir instead; though there were many more Highland Cattle grazing there, it is an open space (NS4759 : Furrowed area near Glenburn Reservoir), and we could all move around freely.