Briefly, geocaching is where someone will hide a "cache" or small box somewhere and post coordinates on where they hid it,,,,sometimes it's a puzzle to find them or tricky or very small. It's always an adventure tho...you put those coordinates into your GPS/iPhone/andriod phone and try to find it, you sign the log at the cache site, it will be in the box with "trade" items, usually trinkets for the kiddos. Then you can go online and talk about your adventure. This is similar to letterboxing in Europe, although they geocache there now as well, it's worldwide....over a million of them are active and more every day. I can't post a link, but you can find it on geocaching.com Sounds like a little bike ride...
Traditional Cache
"King Billys"
Disney Cruise Castaway Cay Cache
GCRFBJ
there are some in Nassau as well, so if anyone is interested in an adventure let me know and we'll make the find as a team.