Thank you for the update! Yeah there are 2 hiking routes passing there. They have been updated with deviations viewable here https://map.geoportail.lu/theme/tourismey?zoom=10&X=686633&Y=6418638&layers=667&version=3&lang=en&rotation=0&opacities=1&bgLayer=basemap_2015_global
I've updated them also on that spot but i haven't checked the rest of the route because it requires some time since governments map is not always accurate or even correct.