"Blade track" - the tourist marked route around the German city of Solingen (Northern Rhine-Westphalia). First stage: Gräfrath - Kohlfurth, 6,3 km.
<a href="//commons.wikimedia.org/wiki/User:Velopilger" title="User:Velopilger">Velopilger</a>
<span class="int-own-work" lang="en">Own work</span>