According to Wikipedia, the online "people's encyclopedia," geocaching
"is an outdoor treasure-hunting in which the participants use a Global Positioning System (GPS) 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 value. Today, well over 440,000 geocaches are registered on various websites devoted to the sport. Geocaches are currently placed in 222 countries around the world and on all seven continents, including Antarctica."
One of the places within those 222 countries and seven continents is Delaware, where geocaching and its outdoors recreational kin, called letterboxing, are becoming increasingly popular outdoor activities on State Wildlife Areas. Both activities now require a permit from the Division of Fish & Wildlife, and can be obtained from the F&W Regional Manager in charge of the wildlife area where the activity will take place. Click here for a printable copy of the application form, and after completing it, please mail the application to the appropriate Regional Manager listed on the form.