https://www.geocaching.com/geocache/GCAH2H2_cne24-04-oukoopse-wilgen
GCAH2H2 [CNE24] #04 Oukoopse wilgen (Traditional Cache) in Utrecht, Netherlands created by BvVeen
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...