The claims may be seasonal and weather-related. In any case, the livestock kept free on the large pastures ensures a lot of morass and a few very 'dirty' sections in the humid autumn weather. Still fun.
The Smugglerweg Trail (piste des contrabandiers) is basically flowy, but quite exposed in some places. In addition, the narrow path on the steep slope is not always easy to cycle. …
It starts wide on the flat at the edge of the fields then it becomes narrow and starts to descend when you enter the forest. In gravel, favor wide 27.5 tires otherwise it will hit hard.