Dry stone walls are a distinguishing and attractive feature of upland Britain. Yet there are many in a state of disrepair. Shot in the beautiful landscape of north Wales, this inspiring film guides the viewer through the technique of building and repairing a dry stone wall. Embarking on a repair to a wall section, Andy Radford goes down to the foundations to rebuild the wall cheek with stone runners, through stones and coping stones. As the repair progresses, he fills between the runners with hearting and explains the importance of bridging stones and pinning.