Customer asked me to build a simple, economical, stacked boulder wall to retain ~4' of fill dirt for a large garden. It's about 120' long. As you all know, odd shaped boulders don't stack real well. I trucked in about 15 loads of 24"-48" boulders.
I started out by skimming off a level ledge for the first courses to sit on. I doubled/tripled up on the 2 bottom courses so the next course will stack on top without falling off. Looks more like a boulder "berm" than a wall. Second/3rd course is more challenging.
Would you use fabric behind the wall to keep dirt/mud from coming through the front openings left because the walls are not perfectly sealed? I was also considering a 3" stone vertical layer behind the fabric, then folding the fabric over the top and behind the 3" stone, but cost/complexity is of concern. Can't get too carried away on perfection-it's not supposed to be a work of art, or cost like a work of art. However, don't want smaller rocks being pushed off or mud oozing through.
I'm more used to building stone/mortar or interlocking block wall with proper pipe/drainage behind it. This thing looks like it might be a problem in the future.