Ever go Geocaching? Don’t know what it is? I’ll explain it!
Geocaching is a sport that has been invented only recently, because you need a GPS, or Global Positioning Unit . This device is able to tell you your position anywhere on the planet within a few feet! It uses signals from satellites, and takes advantage of the fact that those signals travel at a certain speed. The unit can determine how long it took for the signal to arrive, and can then calculate the distance. Using a couple of satellites, a position can be determined. Many modern units are capable of tracking 12 satellites simultanously. The beauty of these devices is that the technology is available because of the military, and airplane equipment. That free research makes handheld units as cheap as $100.
I have a $200 unit (eTrex Legend) that gives me all the major roads in the United States. I can also download new maps into it. It comes in handy while traveling. Using a serial cable, I can hook it up to my computer, and retrieve all the data that it has stored. It keeps track of every where you have been (up to 10,000 points worth), and can store waypoints, and routes. If you hook it up to a laptop with the correct software, you can have a map that updates as you drive, so you are always in the center of the map.
Anyway back to the point. People create things called Geocaches. They are kind of like a treasure hunt, except instead of getting something, you trade something. It’s usually not something valuable, just something interesting. A cache is usually a tupperware container, or an old ammo box. It also contains a logbook, so you can see everyone who has found that cache. To actually find a cache, you put the GPS coordinates of a cache into your GPS, and go! It’s not always as easy as it sounds. The person who hides the cache tries to hide it in a clever place.
There are also many different types of caches, one of which is known as a “multi-cache”. With this type of cache, you find the first hidden container, usually a film tube, and it contains the coordinates for the next leg of the cache. You usually go through about 5 legs, and then find the actual cache. I actually have a cache like that in the park just down the street from my house.
There is a lot more to it than I have described here. I recommend Googling it, or just go to http://www.GeoCaching.com.
Be sure to also look at Benchmarks and travel bugs. There is also an interesting project here that is trying to journal every latitude/longitude intersection. There are probably many other fun things you can find that I haven’t mentioned here. Be sure to let me know what they are!