I thought that I should add a quick explanation of what geocaching is now that we are starting to find a few caches.

First of all you need a handheld GPS and the co-ordinates of where a ‘cache’ has been hidden. One of the best sites for this is Geocaching.com.

Geocaching is like a treasure hunt. Some of the caches are straightforward - the co-ordinates take you straight there, some take you to a clue (or several) from which you have to get the final co-ordinates.

The ones we have done so far (and the ones we are looking at doing) are quiet rural, but there are some in towns and there is even some at motorway service stations.

Here is what Wikipedia has to say about it:

Geocaching is an outdoor treasure-hunting game in which the participants use a Global Positioning System receiver or other navigational techniques to hide and seek containers (called “geocaches” or “caches”) anywhere in the world. A typical cache is a small waterproof container containing a logbook and “treasure”, usually toys or trinkets of little monetary value.