A Short History of Dry Stone Walls

Why Walls Were Built

Dry stone walls are one of the most familiar features of the British countryside. They divide fields, frame lanes, guide footpaths and shelter livestock. Some follow the lines of prehistoric field systems; others were raised during the enclosure awards of the eighteenth and nineteenth centuries, when common land was parcelled into private fields. In upland areas, walls often replaced hedges because trees and shrubs struggled in thin, wind-scoured soils. A good wall is stockproof, weatherproof and, if built well, capable of standing for a century or more without a drop of mortar.

Stone from the Ground Beneath

The first rule of dry stone walling is that the stone chooses the wall. Builders used what was closest to hand, so styles vary sharply from one county to the next. A wall in the Cotswolds is made from oolitic limestone, often creamy and softly weathered. In the Yorkshire Dales and Peak District, hard gritstone and limestone produce walls that look rugged and grey. Cumbria and Snowdonia offer slate and volcanic rock, while Dartmoor and Aberdeenshire are granite country.

For repairs, matching the original stone matters. A patch of bright new limestone in an old wall will stand out for decades. Whenever possible, reuse the stone that has fallen out, and source replacements from a local quarry or a reclaimed pile of similar type and colour.

• Limestone — softer, easily shaped, common in the Cotswolds, Yorkshire Dales and Derbyshire.
• Gritstone — hard, coarse and durable, used across the Pennines and parts of the Peak District.
• Granite — tough and irregular, found in Cornwall, Devon and north-east Scotland.
• Slate — thin and flat, used in Cumbria, Wales and parts of the Lake District.

The Anatomy of a Dry Stone Wall

A traditional wall is not a single thickness of stone. It is really two walls built together, leaning slightly inward and tied across the middle. The base is widest — often 60 centimetres or more — and the wall narrows as it rises, giving it a slight batter. Large foundation stones are set first, then the waller builds up the two faces, placing each stone so that its length runs into the wall rather than lying flat. The middle is packed with smaller stones, known as hearting, which stop the faces from moving.

Every metre or so, a longer stone called a through stone is laid across the full width, binding the two faces together. At the top comes the cope: stones set on edge, or sometimes laid in a double row, to cap the wall and protect the hearting from rain. The craft lies in selecting each stone by eye, turning it until it sits snugly, and never forcing it. The wall holds because of gravity, friction and the skill of the waller.

Regional Styles and Local Character

Travel across Britain and you can read the landscape through its walls. In the Cotswolds, dry stone walls are often topped with upright coping stones and run beside honey-coloured villages. In the Yorkshire Dales, long lines of limestone walls climb the fells, punctuated by stiles and gaps. Derbyshire walls tend to be lower and broader, built from gritstone. Cumbrian walls use slate and volcanic rock, often with a distinctive cope. Cornwall and Devon often have earth-cored hedges with stone faces rather than free-standing walls.

Repairing with Skill and Patience

Dry stone walls are resilient, but they are not indestructible. Frost, livestock rubbing, tree roots, burrowing animals and clumsy footsteps all take their toll. A bulge or a gap is a warning. The worst response is to patch a hole with cement or to pile loose stones back any way they will sit. A proper repair means stripping the damaged section back to sound work, sorting the stone into sizes, and rebuilding it as the original waller would have done.

Start by clearing vegetation and setting up a line or batter frame to keep the wall true. Remove the cope stones and set them aside carefully. Take down the loose section, keeping the face stones, hearting and throughs in separate piles. Rebuild from the foundations, using the largest stones at the base and saving the best-shaped stones for the cope. If a wall is more than a metre high, or leans badly, it is worth asking an experienced waller for advice. Local walling groups and agricultural colleges often run courses.

Walls as Living Landscapes

Look closely at an old wall and you will see more than stone. Lichens and mosses colour the surface, ferns and wildflowers grow in the crevices, and insects, lizards, mice and voles find shelter in the gaps. The wall is a boundary, but it is also a habitat and a windbreak, softening the effect of weather on crops and livestock.

For walkers, walls are companions. They lead you across open moorland, mark the way when mist comes down, and offer a place to pause and look back. Please use stiles and gaps rather than climbing over walls, and keep dogs close in lambing season. Dry stone walls were built by hand, stone by stone, and they will only survive if the same care is passed on.