Given the question: Wichita Mountains -  The Wichita Mountains are located in the southwestern portion of the U.S. state of Oklahoma. The mountains are a northwest-southeast trending series of rocky promontories many capped by 540 million-year old granite. These were exposed and rounded by weathering during the Permian Period. The eastern end of the mountains offers 1000 feet (305 m) of topographic relief in a region otherwise dominated by gently rolling grasslands. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
The answer is:
Natural Place