Gardno is a lake in the Słowińskie Lakeland in Pomeranian Voivodship, Poland. It is the part of Słowiński National Park. Its area is 24.69 km2. It is 6.8 km long and 4.7 km wide. Maximum depth is 2.6 m.
Wikipedia https://en.wikipedia.org/wiki/Lake_Gardno
Address 76-213, Poland
Coordinates 54°39'4.854" N 17°6'43.221" E