Check out geocaching.com for a new game for the adverturous. This requires a Global Positioning Satellite (GPS) device that is becoming common with campers and explorers.
The hand-held device receives signals from three satellites to exactly triangulate your position within about ten feet of virtually any place on earth, including underwater. Players of the new game hide objects in trees, in buildings, under water, in deserted barns -- anywhere, and then post the coordinates on the web site along with a note to help you find what is hidden.
The site name "geocaching" is a combination of the words geography and caching, meaning hidden.
Check this out and get off the couch. Sounds like a great way to get sunburn and find what may be real treasure at the same time!