Please answer the following question: The River Stiffkey is a chalk stream running through an area of north Norfolk England from its source near Swanton Novers to flow out into the North Sea on the north Norfolk coast near the town of Stiffkey. 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