https://www.geocaching.com/geocache/GC8KF3N_balade-au-lac-de-creutzwald-adventure-lab-bonus
GC8KF3N Balade au lac de Creutzwald - Adventure Lab Bonus (Unknown Cache) in Grand-Est, France...
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...