The Bolsena lake, (Italian: Lago di Bolsena), situated in central Italy, is the largest lake in Europe with a volcanic origin and is also noted for a peculiar oval shape, unlike most volcanic lakes, as its origin is related to a couple of craters' collapse happened about 300,000 years ago.
It has an oval shape, and two isles are located in it. A river flows from it. It occupies 113,5 km² in total at an altitude of 305 m above the sea level. The max depth of the lake is 151 m, and averages at 81 m.
It is located in the Province of Viterbo. It is a well known tourist site and there are many hotels and beds & breakfast around it.
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