Highlight • Structure
Large sand trap on the Duffesbach
Cycling
3.9
(7)
Road cycling
5.0
(3)
Hiking
(2)
Tips
Isa Bella
February 18, 2026
Hiking
The Duffesbach stream originates in Hürth and flows eastward. Its sources were located in Knappsack, west of Hürth, and were enclosed by Romans. Today, these sources are dry. It no …
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Udo Slavicek
May 15, 2026
Road cycling
No more water flows in the old streambed on Berrenrather Straße; the stream is diverted underground before the Cologne-Effen town limits. After rainfall, some surface water still collects. Otherwise, if you pass by regularly, you can watch the streambed slowly become overgrown.
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Elevation 110 m
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