Śniardwy
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Śniardwy (German: der Spirdingsee (help·info)) is a lake in the Masurian Lakeland in Warmia-Masuria, Poland. It is the largest lake in Poland with an area of 113.2 km². It is 22.1 km long and 13.4 km wide. Maximum depth is 23 m. Eight islands are located on the lake.