https://www.geocaching.com/geocache/GC9002A_o-tronco-az160-009
GC9002A O Tronco (Az160/009) (Unknown Cache) in Lisboa, Portugal created by GeoDuplaP&F e Crazysarg
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...