Answer the following question: Lac d'Aude -  Lac d'Aude is a lake in Pyrénées-Orientales France. At an elevation of 2136 m its surface area is 0.03 km². 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