Building a Dry Stone Wall — Neolithic Mortarless Construction

Dry stone walling is the technique of building walls from carefully selected and stacked stones without mortar, relying entirely on gravity, friction, and skilled placement to hold them together. This is one of humanity's oldest construction methods, with examples dating back over 5,000 years — the Knap of Howar in Orkney (circa 3700 BCE) contains dry stone walls still standing today. The technique was used worldwide for field boundaries, animal enclosures, terracing, and building foundations. The key structural principles are: a wide base tapering inward (the batter), two parallel outer faces filled with small hearting stones in the centre, through-stones spanning the full width every two to three courses to tie the faces together, and heavy capstones on top to lock the wall together. A well-built dry stone wall distributes load through interlocking contact points — each stone bears on at least two stones below it, and through-stones prevent the two faces from splaying apart. This blueprint covers the complete process from foundation preparation through capstone placement.