Geocaching, pronounced Geo-cashing, is an entertaining adventure game typically played by using a global positioning system (GPS) to look up location coordinates to find caches. Caches are stocked with a wide variety of rewards or treasure for the taking, as long as you leave something of equal value behind. Those interested in hunting for caches can look up coordinates on a number of web sites by using zip code searches to find the locations of hiding spots near you. A great place to get started is www.geocaching.com
Geocaching stems from an old game called "Letterboxing", where a series of clues are used to lead hunters to a hidden prize. Similar to a scavenger hunt, each cache offers a reward of nominal value, with the majority of the reward being the thrill of the hunt. While Geocaching in its present form, is intended to include the use of a GPS unit, those who find themselves less technologically savvy, or simply up for a greater challenge can attempt the feat sans equipment.
Thanks to the wonder of programs like Google Earth, ( http://earth.google.com/ ) a Geocacher can type in coordinates and look at aerial satellite imaging of the cache location. Print the picture, or commit it to memory and head out for the hunt. Coordinates usually have a clue, sometimes in the form of a riddle, to assist the would be hunter on the journey. If you're not too handy with maps, Google Earth will kindly give you driving directions from your home address to the location of the cache. Usually these directions will get you within twenty feet of the location.
Pay attention to the terrain you'll be heading into, and prepare yourself accordingly. Consider taking bug spray, or wearing long pants if the cache is hidden in the woods. If the cache is located in a populated area, consider going in less busy times. You'd be amazed how silly you feel looking under bushes and behind rocks on a major thoroughfare during rush hour traffic. Likewise, if you hunt late at night, be prepared to do some explaining to local law enforcement if you're found in a public park with a flash light after dark.
GPS or not, finding the cache itself sometimes requires patience and intestinal fortitude. Keep in mind that each cache is intended to be hidden from the easy view of non-cachers, but at the same time is usually hidden in a unique setting that stands out. Caches are usually small Tupperware containers, or ammo cans, and are rarely larger than a football. If you're successful in your hunt, there will be a log for you to sign. Be sure to leave a note saying you found the cache, without a GPS!