the geofarm was the first geocaching mega event in switzerland, held at the end of may 2011 in rapperswil-jona/lake of zurich area). approx. 885 teams (2000 participants) were part of it.
the key visual was a charming cow holding a gps receiver (garmin 62). the eyes glow in the dark.
of this coin there is a giant version called geofarm giga geocoin which is currently the world’s largest geocoin (>3 feet).