Rogen (Southern Sami: Rovje) is a lake situated mainly in Harjedalen Sweden with a small portion crossing the Norwegian border. It is the source of Sweden's longest river Klaralven.In Norway Rogen lies inside Femundsmarka National Park in the municipality of Engerdal in Hedmark county and also in the municipality of Rros in Sr-Trndelag 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?
The answer to this question is:
Natural Place