Letterboxing is a hobby in which the participants look for small boxes hidden away in the countryside. A letterbox is just a small box containing a small stamp and a notepad in which the finder of the box can stamp to prove they have been there. The directions provided to locate the box are often cryptic in nature. It is a pastime that can be enjoyed by absolutely anyone. It is the searching for the boxes, and the walking in fantastic scenery that appeals to people.
Many people try to collect as many stamps as possible.
The number of boxes over the next few decades moved up to five, but they have grown exponentially this century, with over 21,365 registered, and many more to be found which are unrecorded, and has grown into a pastime enjoyed by millions every year. For today's event, instead of looking for a box and stamp, you will be looking for controls. You will get a blank map of the park along with a clue sheet containing the clues. You will have to decipher each clue, locate the control on the map, and then go and find the control in the woods. Some of the clues are very direct, some are in the form of a limerick, and others are just plain cryptic.