Geocaching is a treasure hunting game where participants use GPS-enabled devices to hide and seek containers called geocaches around the world. There are over 450,000 geocaches hidden across six continents, ranging in size from micro to standard containers. Players document their finds online, and geocaching has grown into a worldwide community of explorers who enjoy the adventure of the hunt.

1. Geocaching The Hightech Treasure Hunt In The Third Millenium

3. I am sorry …

5. A Geocache

7. GPS Units

9. Caches near Klagenfurt

11. Travelbugs & Geocoins

12. It‘s all about the numbers …

13. Books