Cryosol | Soil Monoliths Cryosols (or Gelisols in USDA Soil Taxonomy) have permafrost either within 1 m of the surface or within 2 m if the pedon is strongly cryoturbated in the active layer. Monoliths.soilweb.ca
Among the ancient Greeks, Homer thought the world to be flat. In contrast, Pythagoras postulated that the earth was round. A century later, Aristotle sided with the theory of the roundness of the earth.
Given this history, it should come as a surprise to anyone that any human being existing in the developed world right now should still consider the idea of a flat Earth probable. Since the mid-1800s, though, modern pseudoscientists have been trying to prove that the Earth is flat.