Geocaching is a hi-tech game of hide-and-seek. Placers hide a container, and it is your mission to try and find them using only your GPS and any clues you are given. Once you find it, you can log your find in the logbook in the cache, and even exchange trinkets!
This is the activity that has bought a lot of us together, including those that started this site. It started in May 2000, after the Clinton Administration removed the signal degradation in the Global Positioning System. The first cache was placed on the 3rd of May in Oregon, and from there it has gone on to become a worldwide activity adopted by many enthusiasts.
Geocaching is a great activity to include with others, such as hiking, mountain-biking or even just travelling.