In its simplest form, geocaching is an easy concept to grasp. Hiders—geocachers who enjoy setting up caches for others to find—pick collections of items and put them into containers, which they then hide, somewhere, say out in a public park or state forest, after ensuring with the appropriate agencies that this activity will be condoned. Other people, seekers, try to find the containers, generally taking items from containers, replacing them with others, and going on their ways. How do people know where they’ve hidden containers, or where to find them? Why, by using their trusty GPS receivers, of course—at least usually.
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