I was talking to a friend the other day about geocaching and letterboxing, and thought I'd gather some resources and list them here. We were able to do both at the Live and Learn Unschooling Conference last year and had fun with it. I hope that someone will be doing it again this year. I think we'll actually bring our own boxes to "plant" this time!
- Letterboxing North America
- Buxley's Geocaching Waypoint
- Beginner's Guide to Geocaching
- Geocaching--The Official Global GPS Cache Hunt Site