http://en.wikipedia.org/wiki/Klerksdorp_Spheres its strange but i cant find anything about this in German language on wikipedia!? its a riddle like the ica stones or the yonaguni underwater pyramids.
Spheres
Stratosphere, mesosphere, and thermosphere . :)
Galatea of the Spheres was created in 1952.
Spheres of Chaos was created in 2000.
Spheres of Chaos happened in 2000.
Heavenly Spheres was created in 1998.
Spheres of Justice was created in 1983.
The Crystal Spheres was created in 1984.
Remixes of the Spheres was created in 2001.
Metallic Spheres was created in 2009.
Congruent spheres
The spheres most affected by forest fires are the flammable spheres.