Geocaching
outdoor recreational activity
Geocaching (, JEE-oh-KASH-ing) is an outdoor recreational activity, in which participants use a Global Positioning System (GPS) receiver or mobile device and other navigational techniques to hide and seek containers, called geocaches or caches, at specific locations marked by coordinates all over the world. The first geocache was placed in May 2000, and as of 2023 there were over three million active caches worldwide.
Geocaching can be considered a real-world, outdoor treasure-hunting game. A typical cache is a small waterproof container containing a logbook and sometimes a pen or pencil. The geocacher signs the log with their established code name/username and dates it, to prove that they found the cache. After signing the log, the cache must be placed back exactly where the person found it. Larger containers such as plastic storage containers (Tupperware or similar) or ammo boxes can also contain items for trading, such as toys or trinkets, usually of more sentimental worth than financial. Geocaching shares many aspects with benchmarking, trigpointing, orienteering, treasure hunting, letterboxing, trail blazing, and another type of location-based game called Munzee.
History
Geocaching is similar to the game letterboxing (originating in 1854), which uses clues and references to landmarks embedded in stories. Geocaching was conceived shortly after the removal of selective availability from the Global Positioning System on May 2, 2000 (Blue Switch Day), because the improved accuracy of the system allowed for a small container to be specifically placed and located.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 4, 2026. The linked authority identifier is Q14930. The Library of Congress control number is sh2004002776. 1 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 2000, 2023 and 1854.
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This entry incorporates text from “Geocaching” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.