geocaching
 

its kinda gay but its also kinda fun. i might make the most difficult one ever.

Geocaching is a high-tech treasure hunting game played throughout the world by adventure seekers equipped with GPS devices. The basic idea is to locate hidden containers, called geocaches, outdoors and then share your experiences online. Geocaching is enjoyed by people from all age groups, with a strong sense of community and support for the environment.

http://www.geocaching.com/

Oh yeah this! I was telling the girlfriend about this a few days ago but couldn't remember the name of the game. Thanks!

yes ive been dragged round the hills hunting for those damn things by my friend, there is NEVER anything interesting in them. maybe you could do something about this and put something amusing in there if you're gonna do it :)

I thought it was called letterboxing or postboxing...