Please answer the following question: 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 list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Natural Place