Answer the following question: Rogen (Southern Sami: Rovje) is a lake situated mainly in Härjedalen Sweden with a small portion crossing the Norwegian border. It is the source of Sweden's longest river Klarälven.In Norway Rogen lies inside Femundsmarka National Park in the municipality of Engerdal in Hedmark county and also in the municipality of Røros in Sør-Trøndelag county. The lakes Nedre Roasten and Femunden lie just to the west of Rogen. 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