Tsao area at the southern tip of the township. Moon World is a classic example of a chalk badlands terrain. In geological terms it comprises highly saline limestone with a sandstone and shale structure, so that in an area of several hundred hectares no plants grow and the highly eroded ground is bare, creating a "lunar" landscape.
草山月世界為典型的白堊土地型，地質是砂岩和頁岩所構成的青灰岩，含有極高的鹽分，導致方圓數百公頃的土地寸草不生，呈現一片光禿禿的地貌，故稱「月世界」。