Geocaching is an outdoor activity where you use the GPS system to direct you to a particular location. At that location, a cache owner has hidden a small container for people to find. In the container is a logbook to sign, and often there are small items to swap. You can find more information on the global website: www.geocaching.com. The company that administers the activity have also produced a series of videos, including this one:
There are a number of reasons to go geocaching: some people enjoy the thrill of searching for hidden treasure, some people enjoy the opportunity to visit locations they may not have otherwise been to, and some people enjoy the exercise. The container with the logbook can be as small as a film canister and in any shape or size, and cache owners are very inventive in looking for places to hide them, so the search for a cache can be a challenge. Caches are usually placed by local people in an area of some significance, either for local history or for sentimental reasons, which means the walk to a cache can be as interesting as the hunt itself. In Cardiff, there are a number of geocaches dedicated to Doctor Who, to the local maritime history and to Shirley Bassey, while a little further afield there are caches placed on the location of a dog’s favourite walk, Barry island and medieval battlefields.
Geocaches can come in all sorts of shapes and sizes. While Tupperware containers are common, people also become more creative with camouflage bags and caches disguised as lamp posts, pine cones, snails or bolts. As long as the cache is on private property, can be safely accessed, and is large enough to contain a logbook, Groundspeak will probably allow it to be listed on the geocaching.com website. This gives a wide variety of caches in a wide variety of locations, meaning there is probably something for everyone in geocaching.