Can’t be. The loons have declared that nature doesn’t make straight lines.
I have now read your link “Wind as a Geologic Agent.” The parallel lines visible on the Google Earth map do NOT have the characteristics of any of the dune processes shown. They have two slightly raised lines with a narrow sunken area between, or two slightly raised lines with a wide flat area between. In other words, the progression is raised, narrow sunken, raised, wide flat, raised, narrow sunken, raised, wide flat, raised, narrow sunken, raised, wide flat, etc. etc. etc. for dozens or more repetitions. Where are there any generally accepted as natural dune features like that??? In addition the ridges are not high like dunes tend to be especially when spaced that far apart. Look at the Google Map link at Comment 48. Go in close, 100 and 200 feet. Look at a lot of them in different areas. No high dunes, and always the wide, narrow, wide, narrow pattern.
I have given the whole issue more thought. Since this is a seasonally heavily watered area, and even more so in the past, the ground must be mostly silt and organic matter, many feet deep. Thus, no rocks for building, thus no human artifacts that might be 7000 to 14,000 years old. The nearest recognized large stone feature is Great Zimbabwe to the east. Very little is known about that feature. Obviously, archaeologists need to get in there and spend a lot of time tying the region together developmentally. From what I could see of existing structures, they are rectangular enclosures, probably brush, and round, small huts, often not on what are probably agricultural efforts in the “canals”, but up on the “ridges.” I will need to look in other areas to see if the pattern is the same. Most of what I look at was in the area between Etosha and the Okavango River.