Students learn the basics of building stone walls without
mortar.
Many stone enthusiasts (including me) have benefited from workshops and certification opportunities through The Stone Trust.
The Stone Trust offers workshops at Opus 40 (below) in New York. The re-purposed bluestone quarry offers a supply of walling stone as well as a
stunning location.
Building with stone might be therapeutic! Working out-of-doors, with natural materials, may help people relax much in the same way pets do.