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International Geocaching Logo
|First played||May 3, 2000|
|Type||Outdoor Recreation Activity|
|Equipment||GPS receiver or GPS-enabled mobile device, writing implement|
International Geocaching Logo
|First played||May 3, 2000|
|Type||Outdoor Recreation Activity|
|Equipment||GPS receiver or GPS-enabled mobile device, writing implement|
Geocaching // is an outdoor recreational activity, in which the participants use a Global Positioning System (GPS) receiver or mobile device and other navigational techniques to hide and seek containers, called "geocaches" or "caches", anywhere in the world.
A typical cache is a small waterproof container containing a logbook where the geocacher enters the date they found it and signs it with their established code name. 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 ammunition boxes can also contain items for trading, usually toys or trinkets of little financial value, although sometimes they are sentimental. Geocaching shares many aspects with benchmarking, trigpointing, orienteering, treasure-hunting, letterboxing, and waymarking.
Geocaching was originally similar to the 160-year-old game letterboxing, 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, because the improved accuracy of the system allowed for a small container to be specifically placed and located. The first documented placement of a GPS-located cache took place on May 3, 2000, by Dave Ulmer of Beavercreek, Oregon. The location was posted on the Usenet newsgroup as . By May 6, 2000, it had been found twice and logged once (by Mike Teague of Vancouver, Washington). According to Dave Ulmer's message, this cache was a black plastic bucket that was partially buried and contained software, videos, books, food, money, and a slingshot. A geocache and plaque called the Original Stash Tribute Plaque now sit at the site.
The activity was originally referred to as GPS stash hunt or gpsstashing. This was changed shortly after the original hide when it was suggested in the gpsstash eGroup that "stash" could have negative connotations and the term geocaching was adopted.
Over time, a variety of different hide and seek type activities have been created or abandoned, so that "geocaching" now may refer to hiding and seeking containers, or locations or information without containers.
An independent accounting of the early history documents several controversial actions taken by Irish and Grounded, Inc., a predecessor to Groundspeak, to increase "commercialization and monopolistic control over the hobby." More recently, other similar hobbies such as Munzee have attracted some geocachers by rapidly adopting smart phone technology, which has caused "some resistance from geocaching organizers about placing caches along with munzees."
For the traditional geocache, a geocacher will place a waterproof container containing a log book (with pen or pencil) and trade items then record the cache's coordinates. These coordinates, along with other details of the location, are posted on a listing site (see list of some sites below). Other geocachers obtain the coordinates from that listing site and seek out the cache using their GPS handheld receivers. The finding geocachers record their exploits in the logbook and online, but then must return the cache to the same coordinates so that other geocachers may find it. Geocachers are free to take objects (except the logbook, pencil, or stamp) from the cache in exchange for leaving something of similar or higher value.
Typical cache "treasures" are not high in monetary value but may hold personal value to the finder. Aside from the logbook, common cache contents are unusual coins or currency, small toys, ornamental buttons, CDs, or books. Also common are objects that are moved from cache to cache called "hitchhikers", such as Travel Bugs or Geocoins, whose travels may be logged and followed online. Cachers who initially place a Travel Bug or Geocoins often assign specific goals for their trackable items. Examples of goals are to be placed in a certain cache a long distance from home, or to travel to a certain country, or to travel faster and farther than other hitchhikers in a race. Higher value items are occasionally included in geocaches as a reward for the First to Find (called "FTF"), or in locations which are harder to reach. Dangerous or illegal items, weapons, food and pornography are generally not allowed and are specifically against the rules of most geocache listing sites.
If a geocache has been vandalized or stolen it is said to have been "muggled". The former term plays off the fact that those not familiar with geocaching are called muggles, a term borrowed from the Harry Potter series of books which was rising in popularity at the same time Geocaching got its start.
Google recently began a new game, Ingress, in which players must be physically near objects' locations, in order to have simulated interactions with them, using an Android or iPhone app. This is somewhat like virtual geocaches, or geodashing, with addition of more advanced game characteristics.
Geocaches vary in size, difficulty, and location. Simple caches are often called "drive-bys," "park 'n grabs" (PNGs), or "cache and dash". Geocaches may also be complex, involving lengthy searches or significant travel. Different geocaching websites list different variations per their own policies.
Container sizes range from "nanos", which can be smaller than the tip of finger and only have enough room to store the log sheet, to 20 liter (5 gallon) buckets or even larger containers. The most common cache containers in rural areas are lunch-box sized plastic storage containers or surplus military ammunition cans. Ammo cans are considered the gold standard of containers because they are very sturdy, waterproof, animal and fire resistant, relatively cheap, and have plenty of room for trade items. Smaller containers are more common in urban areas because they can be more easily hidden.
Caches can be grouped in three categories - with and without a paper log, and events.
The following types do not have paper logs. Similar to Munzee, a BIT Cache is a laminated card with a QR code, URL and a password needed for logging. More information is available at bitcaching.com. They are listed exclusively on opencaching.us.
Virtual caches are coordinates for a location, which has some other described object. Validation for finding a virtual cache generally requires one to email the cache hider with information such as a date or a name on a plaque, or to post a picture of oneself at the site with GPS receiver in hand. New virtual caches are no longer allowed by Groundspeak, but they remain fully supported at other sites such as Opencaching.us and the rest of the Opencaching Network. Earthcaches are virtual caches that are organized by the Geological Society of America. The cacher usually has to perform a task which teaches him/her an educational lesson about the earth science of the cache area. Locationless/Reverse caches are similar to a scavenger hunt. A description is given for something to find, such as a one-room schoolhouse, and the finder locates an example of this object. The finder records the location using their GPS receiver and often takes a picture at the location showing the named object and his or her GPS receiver. Typically others are not allowed to log that same location as a find. Webcam caches are virtual caches whose coordinates have a public webcam. The finder is often required to capture their image from the webcam for verification of the find. New webcam caches are no longer allowed by Groundspeak, but they remain fully supported at other sites such as Opencaching.us and the rest of the Opencaching Network. Finally, a USB Cache or Dead Drop cache location has a USB drive embedded (with permission) into walls or other structures. The cache is retrieved by connecting a device that has a USB port and that is able to read standard text files.
The following types have logs, at least at the final location.
A Multi-cache consists of multiple discoveries of one or more intermediate points containing the coordinates for the next stage; the final stage contains the log book. A Night Cache is multi-stage and intended to be found at night by following a series of reflectors with a flashlight to the final cache location. A Chirp Cache is a Garmin-created innovative advance on multi caches using new wireless beacon technology. The Chirp stores hints, multicache coordinates, counts visitors and confirms the cache is nearby. These caches are fully supported at Opencaching.com, but they caused considerable discussion and some controversy at Groundspeak, where they were given a new "attribute." A Wherigo cache is a multi-stage cache hunt that uses a Wherigo "cartridge" to guide the player to find a physical cache sometime during cartridge play, usually at the end. Not all Wherigo cartridges incorporate geocaches into game play. Wherigo caches are unique to the geocaching.com website. An Offset cache is a multi-cache in which the initial coordinates are for a location containing information that encodes the final cache coordinates. An example would be to direct the finder to a plaque where the digits of a date on the plaque correspond to coordinates of the final cache.
Guest Book Caches use guest books often found in museums, tourist information centers, etc. They are listed exclusively at Opencaching.us. A letterbox hybrid cache is a combination of a geocache and a letterbox in the same container. A letterbox has a rubber stamp and a logbook instead of tradable items. Letterboxers carry their own stamp with them, to stamp the letterbox's log book and inversely stamp their personal log book with the letterbox stamp. The hybrid cache contains the important materials for this and may or may not include trade items. Whether the letterbox hybrid contains trade items is up to the owner. Moving/Travelling caches are found at a listed set of coordinates. The finder hides the cache in a different location, and updates the listing, essentially becomes the hider, and the next finder continues the cycle. This cache type is fully supported at Opencaching.us and other Opencaching Network sites. Mystery/puzzle caches require one to discover information or solve a puzzle to find the cache. Some mystery caches provide a false set of coordinates with a puzzle that must be solved to determine the final cache location. In other cases, the given location is accurate, but the name of the location or other features are themselves a puzzle leading to the final cache. Alternatively, additional information is necessary to complete the find, such as a padlock combination to access the cache. Finally, Challenge Caches require a geocacher to complete a reasonably attainable geocaching-related task before being able to log the find. Examples include finding a number of caches that meet a category, completing a number of cache finds within a period of time, or finding a cache for every calendar day, etc.
There are a few kinds of events. An Event Cache is a gathering organized and attended by geocachers. Cache-In Trash-Out (CITO) Events is a coordinated activity of trash pickup and other maintenance to improve the environment. CITO is an ongoing environmental initiative created by Groundspeak Inc. related to Geocaching which encourages Geocachers to clean up areas parks and other areas. This is done in two ways: specific events, traditionally around the time of Earth Day each year, in which groups go around picking up litter and maintaining the landscape while finding geocaches. A Mega Event is defined by attendance of over 500 people. Mega Events are typically annual events, usually attracting geocachers from all over the world. Finally, a GPS Adventures Maze Exhibit: is an exhibit at various museums and science centers in which participants in the maze learn about geocaching. These "events" have their own cache type on Geocaching.com and include many non-geocachers.
Geodashing is an outdoor sport in which teams of players use GPS receivers to find and visit randomly selected "dashpoints" (also called "waypoints") around the world and report what they find. The objective is to visit as many dashpoints as possible.
The first game organized by gpsgames.org ran for two months (June and July 2001); each subsequent game has run for one month. Players are often encouraged to take pictures at the dashpoints and upload them to the site.
Geocaching from space is combining flight to near space and geocaching game and unique science experiment. First start was 16. November 2013 in Prague and was successful. Ten caches and two "radioseeds" went up to 30 km (19 mi) into the stratosphere on a Dropion module carried by a high altitude balloon. The caches and seeds then fell to earth for people to find.   
GPX files containing information such as a cache description and information about recent visitors to the cache are available from various listing sites. Geocachers may upload geocache data (also known as waypoints) from various websites in various formats, most commonly in file-type GPX, which uses XML. Some websites allow geocachers to search (build queries) for multiple caches within a geographic area based on criteria such as ZIP code or coordinates, downloading the results as an email attachment on a schedule. In recent years, Android and iPhone users have been able to download apps such as GeoBeagle that allow them to use their 3G/Gps enabled devices to actively search for and download new caches.
A variety of geocaching applications are available for geocache data management, file-type translation, and personalization. Geocaching software can assign special icons or search (filter) for caches based on certain criteria (e.g. distance from an assigned point, difficulty, date last found).
Paperless geocaching means hunting a geocache without a physical printout of the cache description. Traditionally, this means that the seeker has an electronic means of viewing the cache information in the field, such as pre-downloading the information to a PDA or other electronic device. Various applications are able to directly upload and read GPX files without further conversion. Newer GPS devices released by Garmin, DeLorme and Magellan have the ability to read GPX files directly, thus eliminating the need for a PDA. Other methods include viewing real-time information on a portable computer with internet access or with a web-enabled smart phone. The latest advancement of this practice involves installing dedicated applications on a smart phone with a built-in GPS receiver. Seekers can search for and download caches in their immediate vicinity directly to the application and use the on-board GPS receiver to find the cache.
A more controversial version of paperless caching involves mass-downloading only the coordinates and cache names (or waypoint IDs) for hundreds of caches into older receivers. This is a common practice of some cachers and has been used successfully for years. In many cases, however, the cache description and hint are never read by the seeker before hunting the cache. This means they are unaware of potential restrictions such as limited hunt times, park open/close times, off-limit areas, and suggested parking locations.
The website geocaching.com now sells mobile applications which allow users to view caches through a variety of different devices. Currently, the Android, iPhone, webOS, and Windows Phone mobile platforms have applications in their respective stores. The app also allows for a trial version with limited functionality. Additionally "c:geo - opensource" is a free opensource full function application for Android phones that is very popular.
Geocache listing websites have their own guidelines for acceptable geocache publications. Government agencies and others responsible for public use of land often publish guidelines for geocaching, and a "Geocacher's Creed" posted on the Internet asks participants to "avoid causing disruptions or public alarm." Generally accepted rules are to not endanger others, to minimize the impact on nature, to respect private property, and to avoid public alarm.
Cachers have been approached by police and questioned when they were seen as acting suspiciously. Other times, investigation of a cache location after suspicious activity was reported has resulted in police and bomb squad discovery of the geocache. Schools have been occasionally evacuated when a cache has been seen by teachers or police, as in the case of Fairview High School in 2009. A number of caches have been destroyed by bomb squads. Diverse locations, from rural cemeteries to Disneyland, have been locked down as a result of such scares.
The placement of geocaches has occasional critics among some government personnel and the public at large who consider it littering. Some geocachers act to mitigate this perception by picking up litter while they search for geocaches, a practice referred to in the community as CITO (Cache-In-Trash-Out). Events and caches are often organized revolving around this practice, with many areas seeing significant cleanup that would otherwise not take place, or would instead require federal, state or local funds to accomplish. Geocachers are also encouraged to clean up after themselves by retrieving old containers once a cache has been removed from play.
Geocaching is not illegal in the United States and is usually positively received when explained to law enforcement officials. However, certain types of placements can be problematic. Although generally disallowed, hiders could place caches on private property without adequate permission (intentionally or otherwise), which encourages cache finders to trespass. Caches might also be hidden in places where the act of searching can make a finder look suspicious (e.g. near schools, children's playgrounds, banks, courthouses, or in residential neighborhoods), or where the container placement could be mistaken for a drug stash or a bomb (especially in urban settings, under bridges, near banks, courthouses, or embassies). As well as concerns about littering and bomb threats, some geocachers hide their caches in inappropriate locations, that may encourage risky behaviour, especially amongst children. Examples include electrical boxes and light pole covers. Hides in these areas are discouraged, and cache listing websites enforce guidelines that disallow certain types of placements. However, as cache reviewers typically cannot see exactly where and how every particular cache is hidden, problematic hides can slip through. Ultimately it is also up to cache finders to use discretion when attempting to search for a cache, and report any problems.
Regional rules for placement of caches have become quite complex. For example in Virginia, the Virginia Department of Transportation and the Wildlife Management Agency now forbids the placement of geocaches on all land controlled by those agencies. Some cities, towns and recreation areas allow geocaches with few or no restrictions, but others require compliance with lengthy permitting procedures.
The South Carolina House of Representatives passed Bill 3777 in 2005, stating, "It is unlawful for a person to engage in the activity of geocaching or letterboxing in a cemetery or in an historic or archeological site or property publicly identified by an historical marker without the express written consent of the owner or entity which oversees that cemetery site or property." The bill was referred to committee on first reading in the Senate and has been there ever since.
Three adult Geocachers, a 24 year old woman and her parents, were trapped in a cave and rescued by firefighters in Rochester, New York, while searching for an ammo can. Rochester Fire Department spokesman Lt. Ted Kuppinger said, "It's difficult because you're invested in it you want to find something like that so people will probably try to push themselves more than they should but you need to be prudent about what you're capable of doing,”
Several deaths have occurred while geocaching. The death of a 21 year old, experienced cacher, in December 2011, "while attempting a cache that does not look all that dangerous," led to discussion in Groundspeak forums of whether changes should be made, and whether cache owners or Groundspeak could be held liable.
In 2008, two lost hikers on Mt. Hood, after spending the night in a snow cave, stumbled across a geocache and were able to phone this information out to rescuers, resulting in their timely rescue.
Numerous websites list geocaches around the world. Geocaching websites vary in many ways, including control of data.
The first website to list geocaches was announced by Mike Teague on May 8, 2000. On September 2, 2000, Jeremy Irish emailed the gpsstash mailing list that he had registered the domain name geocaching.com and had set up his own Web site. He copied the caches from Mike Teague's database into his own. On September 7, Mike Teague announced that Jeremy Irish was taking over cache listings. As of 2012[update] Teague had only logged 5 caches.
The largest site is Geocaching.com, owned by Groundspeak Inc., which began operating on September 2, 2000. With a worldwide membership, and a Freemium business model, the website claims millions of caches and members in over 200 countries. Hides and events are reviewed by volunteer, regional cache reviewers before publication. Free membership allows users access to coordinates, descriptions, and logs for some caches; For a fee, users are allowed additional search tools, the ability to download large amounts of cache information onto their gps at once, instant email notifications about new caches and access to premium-member-only caches.
The website no longer lists new caches without a physical container, including virtual and webcam caches; however, older caches of these types have been grandfathered in (except for locationless/reverse, which are completely archived). Earthcaches are the exception to the no-container rule; they are caches in which players must answer geological questions to complete the cache. Groundspeak created a waymarking website to handle all other non-physical caches. The website also no longer lists Challenges, for which Groundspeak removed "all traces of the Challenges functionality and related content from Geocaching.com." To explain, Groundspeak stated, "On an office wall here at HQ is a sign that reads, Let’s make better mistakes tomorrow.”
The website also supports the discovery of benchmarks in the USA. There are currently no benchmarks outside the USA in their database. The website provides the best known longitude and latitude (sometimes only accurate to within six or more seconds) of the object along with a description. Hunters use the clues to try to find the benchmark; the benchmark can be logged as Found, Not Found, Note, or Destroyed. The "Destroyed" log should only be used if there is evidence that the mark has been permanently destroyed.
Groundspeak allows extraterrestrial caches, e.g. the Moon or Mars, although presently, the website only provides earthbound coordinates. Thus the cache that exists on the International Space Station, GC1BE91, uses the launch area Baikonur in Kazakhstan as its position.
The site promotes mobile applications, and lists over two dozen applications (both mobile and browser/desktop based) that are using their proprietary but royalty-free public API. Developers at c:geo have criticised Groundspeak for being incompatible with open-source development.
The Opencaching Network provides independent, non-commercial listing sites based in the cacher's country or region. The Opencaching Network lists the most types of caches, including traditional, virtual, moving, multi, quiz, webcam, BIT, guest book, USB, event and MP3. The Opencaching Network is less restrictive than many sites, and does not charge for the use of the sites. All listings are reviewed by the network operators before being published and although cross-listing is permitted, it is discouraged. Some listings are listed on other sites, but there are many that are unique to the Opencaching Network. Features include the ability to organize one's favourite caches, build custom searches, be instantly notified of new caches in one's area, seek and create caches of all types, export GPX queries, statpics, etc. Each Opencaching Node provides the same API for free (called "OKAPI") for developers who want to create third-party application with Opencaching Network's content.
Countries with associated opencaching websites include the United States at www.opencaching.us, Germany at www.opencaching.de, Sweden at www.opencaching.se, Poland at www.opencaching.pl, Czech Republic at www.opencaching.cz, Norway at www.opencaching.no, The Netherlands at www.opencaching.nl, and the United Kingdom at www.opencaching.org.uk.
The main difference between opencaching and traditional listing sites is that all services are open to the users at no cost. Generally, most geocaching services or websites offer some basic information for free, but users may have to pay for premium information or advanced searching capabilities. This is not the case with opencaching; every geocache is listed and accessible to everyone for free.
Additionally, Opencaching sites allow users to rate and report on existing geocaches. This allows users to see what other cachers think of the cache and it encourages participants to place higher quality caches. The rating system also greatly reduces the problem of abandoned or unsatisfactory caches still being listed after repeated negative comments or posts in the cache logs.
Not to be mistaken for opencaching.us or several other opencaching.* international websites, opencaching.com aims to be as free and open as possible with no paid content. Caches are approved by a community process and coordinates are available without an account. Traditional, puzzle, virtual, and multi caches are supported.
All caches published on opencaching.com are available under an Open Source license. The site was created by Garmin, but owning a Garmin device is not required for the full use of the site, as there are several Android and iPhone apps that let users access the site while on the trail. Garmin's site allows users to rate the "Awesomeness" of hides.
Opencaching.com also provides a free API for developers that want to utilize the site's content.
In late 2010, Garmin introduced new technology supporting Chirp caches, using wireless beacon technology. Soon after, their new cache listing service was announced. This new service was promoted in various ways, including contests, and the site was soon supported with both Android and iPhone apps.
In many countries there are regional geocaching sites, but these mostly only compile lists of caches in the area from the three main sites. Many of them also accept unique listings of caches for their site, but these listings tend to be less popular than the international sites, although occasionally the regional sites may have more caches than the international sites. There are some exceptions though, e.g. in the former Soviet Union the site Geocaching.su remains popular because it accepts listings in the Cyrillic script. Additional international sites include Geocaching.de, a German website, and Geocaching Australia, which accepts listings of cache types deprecated by geocaching.com as well as traditional geocaches.
GPSgames.org is an online community dedicated to all kinds of games involving Global Positioning System receivers. GPSgames.org allows traditional geocaches as well as virtual, locationless, and traveler geocaches. Geodashing, Shutterspot, GeoVexilla, MinuteWar, GeoPoker, and GeoGolf are among the GPS games available. GPSgames.org has been 100% free since 2001, through donations.
Navicache.com started as a regional listing service in 2001. While many of the website's listings have been posted to other sites, they also offer unique listings. The website lists nearly any type of geocache and does not charge to access any of the caches listed in their database. All submissions are reviewed and approved. Navicache is under transition to new owners, who said they "plan to develop a site that geocachers want, with rules that geocachers think are suitable. GC.com and OX are both backed by large enterprises, and while that means they have more funding and people, we’re a much smaller team – so our advantage is the ability to be dynamic and listen to the users.”
Terracaching.com seeks to provide high-quality caches made so by the difficulty of the hide or from the quality of the location. Membership is managed through a sponsorship system, and each cache is under continual peer review from other members. Terracaching.com embraces virtual caches alongside traditional/multi-stage caches and includes many locationless caches among the thousands of caches in its database. It is increasingly attracting members who like the point system. In Europe TerraCaching is supported by Terracaching.eu. This site is translated in different European languages, has an extended FAQ and extra supporting tools for TerraCaching. Terracaching strongly discourages caches that are listed on other sites, so called double-listing.
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