Everyone dreams of finding treasure, a crock of gold at the end of a rainbow. For those bitten by the geocaching bug, a different kind of treasure is all around, just waiting to be found. And there are accurate and detailed clues out there to help you find it.

The fun lies in the challenge: deciphering clues, downloading co-ordinates, mastering your GPS device, and then setting off into the countryside in search of artfully-concealed caches. Since it began in the year 2000, geocaching has become an international craze, adding a whole new dimension to exploring the outdoors, on your own, with friends and family or at the big events.

This guide tells you all you need to know to get started