Printed from: https://conservationhandbooks.com/dry-stone-walling/variations-in-walling/stone-fences/
Stone fences, also known as flag fences or walls, slate fences or tombstone walls, consist of a single line of stones set vertically on edge. Most walling areas with suitable large slabs have the occasional example. These may represent the remnants of a more extensive system which was mainly replaced because, at only about 30″...