Geo-Cacheing is like a treasure hunt where you are given the Latitude and Longitude of a "Cache".
With a decent hand held device that finds satalites orbiting the earth, you can see exactly where you are.
(Well, within 6 feet or so).
Folks hide containers with log books and simple cheap toys and such and publish the location on the internet at Geocaching.com .
The trick is to find the cache and log your find.
Took me 2 yrs. to find one in a big parking lot.
The sneaky thing is to hide it where it cannot be easily found. Is a challenge.
A fake bolt holding a road sign may be a cache.
Or an acorn in a pine tree.
Some of these people are evil about where they hide things ! LOL
Just a game to get you out of the house, but is fun.
Grey