Geocaching

Geocaching is an outdoor sport that involves the use of a Global Positioning System ("GPS") receiver or traditional navigational techniques to find a "geocache" (or "cache") placed anywhere in the world. A typical cache is a small, waterproof container containing a logbook and "treasure", usually trinkets of little value. Participants are called geocachers.

Geocaching is similar to a much older activity called letterboxing. The major difference is its use of the GPS and the Internet.