Some people use their Global Positioning System (GPS) when they are lost, and some people use it for fun. Geocaching is an outdoor treasure-hunting game in which the participants use a GPS or other navigational techniques to hide and also seek out containers (called "geocaches" or "caches") anywhere in the world.

Here's how it works: individuals and organizations set up caches anywhere they want (usually on hiking trails) and then they share the locations of these caches on the internet. GPS users can then use the latitude and longitude coordinates to find the caches. They can be found tied up in the branches of trees, in a field of grass, just off a path, or anywhere else along a trail. Once found, a cache may provide the visitor with a wide variety of rewards. All the visitor is asked to do is to leave something in the cache container if they take something.

What do you find in a cache? To find out read more

One of the things you'll usually find in a cache is a logbook. Everyone who has found that particular cache will write down their name, the date, the time they arrived, and any other info they'd like to share (great sites to see in the surrounding area or coordinates to other caches nearby).

What else can be found in a cache? Maps, books, software, hardware, CDs, DVDs, pictures, money, jewelry, tickets, antiques, tools, art, games - anything and everything (it just has to fit in the container). It's recommended that items in a cache be individually packaged in a clear zipped plastic bag to protect them. What shouldn't be in a cache? Food (wild animals, though cute, are not invited to play in this game), weapons, drugs, alcohol, or anything illegal are not cache-worthy.

Want to play? Check out this website, type in where you live (or where you're planning on going) and find the coordinates of a cache. Strap on your hiking boots, and have some fun while you get a great workout.

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