How to Build a Dry Stack Retaining Rock Wall: 9 Steps
· Dig a ditch the length of the wall that is about a foot wide and 8 to 12 inches ( cm cm) below the ground level. This ditch will act as the wall's footing and prevent the rocks from sliding forward due to pressure from the earth behind. Try to cut the ditch into native soil rather than loose added soil, as the former provides a more stable foundation for the wall.