The <a href="//commons.wikimedia.org/wiki/Category:Gro%C3%9Fer_Seddiner_See" title="Category:Großer Seddiner See">Großer Seddiner See</a> is a <a href="https://en.wikipedia.org/wiki/Glacial_lake" class="extiw" title="en:Glacial lake">glacial lake</a> in the nature park <a href="//commons.wikimedia.org/wiki/Naturpark_Nuthe-Nieplitz" title="Naturpark Nuthe-Nieplitz">Nuthe-Nieplitz</a> in <a href="//commons.wikimedia.org/wiki/Germany" class="mw-redirect" title="Germany">Germany</a>, <a href="//commons.wikimedia.org/wiki/Brandenburg" title="Brandenburg">Brandenburg</a>, district <a href="https://en.wikipedia.org/wiki/Potsdam-Mittelmark" class="extiw" title="en:Potsdam-Mittelmark">Potsdam-Mittelmark</a>, and covers 2,18 km². The lake is situated in the municipalities <a href="https://en.wikipedia.org/wiki/Seddiner_See" class="extiw" title="en:Seddiner See">Seddiner See</a> and <a href="https://en.wikipedia.org/wiki/Michendorf" class="extiw" title="en:Michendorf">Michendorf</a>.
<a href="//commons.wikimedia.org/wiki/User:Lienhard_Schulz" title="User:Lienhard Schulz">Lienhard Schulz</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>