Please answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Ryck - The Ryck is a river in Mecklenburg-Vorpommern Germany. From its source near Bartmannshagen part of the Suderholz community northeast of Grimmen the Ryck flows for about 28 km to the east reaching Greifswald shortly before its mouth. The larger part of the river outside Greifswald is also referred to as Ryckgraben.
A:
Natural Place