Please answer the following question: Onkamojarvi - Onkamojarvi (Russian: ) is a lake in Salla municipality Lapland Finland. It is located on the border of Finland and Russia most of the lake being on the Finnish side of the border. The lake's surface is 290.5 metres above sea level and its area is about 18 km. 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?
Answer:
Natural Place