Bullengraben

The Bullengraben is a moat that was cultivated in the 7th century in Berlin's glacial valley. It is located in the Berlin district of Spandau and leads from the old village center of Staakens for around five kilometers to the east to the Havel, into which it flows, in the last section underground, north of the Spandau castle wall. Used for centuries to ameliorate the damp lowland, the ditch has served as a drainage ditch since the 1960s to take in rainwater from the surrounding Spandau city districts. The development of the areas around the Bullengraben reflects part of the Spandau settlement history.

Between 2004 and 2007, the trench, which was canalized in the 1960s and 1970s and subsequently neglected, was rehabilitated by DB ProjektBau as part of a replacement measure. The subsidiary of Deutsche Bahn laid the green corridor, which is up to 200 meters wide, parallel to the ditch

@Loth: Quelle = de.wikipedia.org/wiki/Bullengraben

beautiful view of the Havel