"Before the wind ever has a chance to enter a desert settlement, it should be lifted high above the community by some barrier at the settlement's boundaries.
To lift wind in the desert sufficiently, the barriers must be as high as most of the tallest buildings in the settlement it protects, generally about two stories."
- Kelly, Kathleen, and R.T. Schnadelbach. 1976. Landscaping the Saudi Arabian Desert. Philadelphia: Delancy Press.