Walkway across a sloped lawn question
I'd like to lay a natural stone walkway traversing my front lawn from driveway to front door. The path I've designed will encompass a small retaining wall on the up hill side and a slight fall away on the downhill (the walkway crosses the sloped lawn almost like a mild ledge). I had envisioned laying the flagstone atop crushed stone and sand foundation. I fear without a border on the downhill path edge, my foundation and stone would eventually start slide down the hill. Would like to avoid a mortar foundation if possible. Any suggestions?