https://www.geocaching.com/geocache/GC49E29_estrela-geoart-20-20
GC49E29 Estrela - GeoArt [20/20] (Unknown Cache) in Castelo Branco, Portugal created by jccms
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...