The process of burying a capsule
filled with a logbook
and various other items, recording the location with a GPS
receiver and then publishing that location on the web. Other people can then find that location using their own GPS
receivers and make a note of their find in the logbook. They can also take one of the items in the capsule and leave one of their own. Its kinda a new tech adventure game/treasure hunt.
The first geocache
was set on May 3, 2000
outside of Portland
As of this date, there are caches in 20 US states and 11 different countries.
More information, including a database of currently known geocaches can be found at http://www.geocaching.com