https://www.geocaching.com/geocache/GC26065_labris-caverne-du-petit-rederching
GC26065 L'abris caverne du Petit-Rederching (Multi-cache) in Grand-Est, France created by marco383
Geocaching is a treasure hunting game where you use a GPS to hide and seek containers with other participants in the activity. Geocaching.com is the listing...