Fun - Geocaching

The camping board at About.com has a nice summary of Geocaching, which is a combination of a scavenger hunt and mapreading. Here's it in a nutshell: Nice folks go out to some place interesting/hard to get to/scenic or otherwise and leave a watertight container with a log book and some trinkets. You look them up on the internet by location, get the coordinates and take off with your GPS in search of the spot (if you are good with maps you really don't need a GPS receiver). I just found over 5 caches within 5 miles of my house. Pretty cool and something different to do while camping.

I especially like how the Geocaching folks just had a "Cache In, Trash Out" day, where people got together to do some litter cleanup.

Camping.about.com

The GeoCaching Website