SBG thinks she can make something on the cheap that looks just like this with ordinary concrete steppers set just so into the slope with some gravel, succulents and grasses. Trick is to stack the steppers here and there for diffo levels.
I bet these could be made w/ some concrete and a homemade mold using old fence planks... I also like the natural look of just using old pallet planks or fence planks laid out in the same manner. garden, untitled, by Maureen Anne on flickr