I was wandering in Google Earth when I found these fascinating round structures in the South of Egypt, it turns out they are circular crop circles around Sharq El Owainat due to an irrigation system that pivot around the center of the circle Coordinates 22°23'58.00"N 28° 3'56.03"E

NASA Science

Crop Circles in Sharq El Owainat - NASA Science

Greenery sprouts from the Sahara Desert in Egypt thanks to the Nubian Sandstone Aquifer System.