In South Africa, the territory of the Namib Desert, there are thousands of circles with a diameter of 2 to 15 meters, which is called as the "magic circle". These circles are observed not only in Namibia, but Angola and South Africa.
Most of the magic circle is inside the continent, within a radius of 160 km. The nearest village from here more than a hundred kilometers. This is not surprising, because there is absolutely unsuitable for cultivation of the land, and completely lacking vital attributes. For example, water. The origin of the circles are still unknown. Local residents believe that the wheels left the dragon.