Geocaching is a widely popular, high-tech game of outdoor treasure hunting in which participants use a Global Positioning System (GPS) receiver or other navigational techniques to hide and seek containers called "geocaches" or "caches." A typical cache is a small waterproof container containing a logbook and "treasure," usually toys or trinkets of little value.
It's important that geocachers respect property rights and seek permission where appropriate. Some public land agencies, including Montana Fish, Wildlife & Parks, require that geocachers obtain a permit before placing a cache on agency-managed land.
Other reminders for geocachers: