Small lake near Cologne with calm water with trees around and on the shore under an overcast sky with clouds

small lake cologne calm water trees around shore overcast sky clouds tranquil lake view german nature waterfront scenic overcast weather cloudy sky lakeside cologne landscape serene treelined water surface reflective lakeside trees peaceful overcast day cloudy atmosphere idyllic lakeshore natural beauty cologne scenery cloudy conditions waters edge lakeside scene german landscape shore view still water treecovered reflective lake cologne nature cloud cover lakeside tranquility calm lake treebordered overcast scene cloudfilled sky