Stack-Stone Retaining Walls

If you've ever wondered how they build those nice stack-stone retaining walls, I'm going to show you how right now. It gets started with a concrete foundation. So what we've done here is adjust for the elevation change.  This wall begins at the corner of the house. It's about 5 1/2ft tall. It carries on through the elevation change. This wall’s about 35-40ft long. At the very end of this was going to be about 8-10inches tall.  So we start off at a higher elevation and end at the lower elevation. At the foundation, we've begun by pouring a concrete foundation. This is going to have to step up on the bottom to adjust for the change in slope; so it actually rises in steps.  Let me try to get a close up of that.   Here's one of those steps right down here in this hole. You'll see this concrete foundation is poured at a depth of 6inches thick, and we step it up to adjust for the grade. Otherwise, this whole entire wall would just...