A grouping or list of non-collectible trackable items that can be seen by other geocachers. Trackables in an inventory can be grabbed, dropped, discovered, etc. Conversely, items in a collection can o [..]

The most current geodetic datum used for GPS is the World Geodetic System of 1984 (WGS84). The significance of WGS84 comes about because GPS receivers rely on WGS84. Geocaching uses the WGS84 datum by [..]

"Additional Logging Requirement". Logging requirements beyond finding the geocache and signing the log. All ALRs must be optional for finders of a geocache.

Archiving permanently removes a geocache listing from search results. A geocache owner can archive their own listing. A geocache owner cannot unarchive it. As an alternative to archiving, the geocache [..]

Icons featured on a details page for geocaches that describe specific characteristics of a geocache. There are several classes of attributes, such as whether or not you need special equipment, possibl [..]

Using your GPS unit and/or written directions provided by NOAA's National Geodetic Survey (NGS), you can seek out NGS survey markers and other items that have been marked in the United States. Ch [..]

Also known as a "Bison tube". A small, metal, water-tight cylindrical container that can be used for micro caches. Its name comes from the original manufacturer, but there are now several ot [..]

A Geocaching Premium Membership feature that can be used to group geocache listings in whatever way you like. You may want a Bookmark List of caches you intend to find this weekend or perhaps an " [..]

Also known as a Travel Bug®. A trackable tag with a unique code that can be attached to an item. The trackable is then carried from cache to cache (or person to person) in the real world, and its prog [..]

"Bring Your Own Pen/Pencil". An acronym often used by geocache owners to communicate to other geocachers that you will need to bring your writing utensil in order to sign the cache logbook.