Saaksjarvi is a lake in Kokemaki Satakunta western Finland east from the town of Pori. The lake is notable because it overlies an impact crater.The crater is 5 kilometres (3 mi) in diameter and is completely buried under the lake and is not visible at the surface. The age of the impact structure is estimated to be about 543 12 Ma (million years ago) at the boundary between the Ediacaran and Cambrian periods. 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