There are 6 million geocachers worldwide and over 2 million active geocaches. There are even caches on Antarctica.
Looking back now there were signs, we just didn't know it at the time. My sister remembers clearly a few years ago watching two people hanging around suspiciously under a pub sign (The Three Frogs) and then leaving something underneath it. When she went to have a look there was a plastic frog sitting on the floor. Now we realise that it was a cache, but at the time we thought it was all really bizarre. My mum also remembers seeing two people outside a bush looking around and then disappearing inside for a minute, and now it all makes sense.
Welcome to a new world of muggles, hitchhikers and travel bugs....
So what is Geocaching?
A 'cache' is typically a small waterproof container, inside you can find a logbook, and possibly other items that can be swapped or moved around from cache to cache.