Geo Caching

Has anyone heard of Geo caching. It is where in your area and all around the world are little ammo cans or lil boxes hidden that you find with gps coordinates and on some you find they have numerous miscelanous items in them. you take one item out and put an item in. Such as someting from your pocket. Sometimes they have certain themes or whatever. Some are easy and some are hard but it is the adventure of hunting and then finding it. I think it really helps to get people out of the house and going out in nature for walks, but with a lil excitement to it. Well you can probably find a lot in your area. I didn't count but there are probably around 30 or more just in our area. I remember going to one up at No Business lookout once a while back and down in southern Utah where the biggest Ponderosa pine is on record in Utah there is a geo cach site there as well. SO just about anywhere you go on trips around the world, there are geo caches waiting to be found. You can even be the one to hide one and then list it's coordinates and some hints on how to get to it. Anyway, something I thought of to share with you all