xfer from a dead geocaching board: 'I found a perfect stone ball in the jungle and reburied it'

Rescuing this from a Costa Rica expat forum that's about to go offline. Topic = the Diquís stone spheres. Background for newbies: ~300 polished stone balls, granodiorite, found in the Diquís Delta of southern Costa Rica since the 1930s (United Fruit clearing jungle for banana plots first hit them). ……