Illinois River is a tributary of the Michigan River approximately 71 miles (114 km) long in Jackson County in north central Colorado. It drains part of the North Park basin south of Walden.The Illinois River starts in the Never Summer Mountains near the continental divide just south of Farview Mountain. It descends northward through a winding gorge emerging into North Park at approximately 8000 feet (2400 m) above sea level. 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?
Natural Place