Did you know that Wurmtal slopes can also be man-made? This after-work tour takes us to the traces of the Langenberg mine, which already existed in 1573. Its slag heaps were poured onto the slopes of the Wurmtal valley and the site of today's cemetery is also located on a coal tip.

At the parking lot, we come across the last remains of the old shaft building, where coal was still mined until 1913. Another contemporary witness, the old shaft bell, has found a new place in the inner courtyard of the community center. A short detour through the cemetery with its old trees is worthwhile. The mine was active here until 1847 before it moved further up the mountain. A public garden was then created on the mine site. On today's Halbmond-Urnenfeld, horses once moved a circular hoist and lifted coal uphill to Kohlscheid.

Our path leads steeply up and down the Wurmtal valley through secluded forests. At the Wurm bridge, we cross an old border and enter the territory of the former Counts of Jülich on the opposite bank. Their castle, Wilhelmstein, which can be seen peeking out over the meadows at the bottom of the valley, has been perched on the edge of the cliff since the 13th century. The 1200-year-old "Alte Mühle" oil and grinding mill down in the valley meadows also bowed to the counts and paid levies to build the fortress.