The activity of geocaching requires some items (or objects), including the GPS for geocaching. Some of these items and other facts (basic rules) are discussed in the following paragraphs.
Containers
Geocaches are simple containers of any size. They may be small cans or big metal boxes. The person who created the geocache places some items inside the container. These items can be anything from simple toys to expensive jewels. In addition, each geocache should include a pen and paper to allow the player (who finds the cache) to leave a note for other players.
Hiding Geocaches
Geocaches can be placed anywhere. The geocacher who creates the geocache may hide it among rocks, on a branch of some tree, or anywhere. Based on how the geocache is hidden, the geocacher has to update the difficulty level for finding the geocache on the website where the cache is listed. It is not recommended to hide geocaches under the earth's surface as the GPS devices will not be able to help in tracing them. Also, if the geocache is buried under earth's surface, the player will need tools to unearth it. Most geocaching websites do not allow geocaches to be placed under the surface of earth.
GPS Handheld for Geocaching
GPS (Global Positioning System) is used to determine the location of the geocacher while she/he is trying to locate a geocache. The coordinates on the GPS help in determining his/her position by calculating the latitude, longitude, and elevation of the geocache. It also helps the player in navigation while she/he is in pursuit of the geocache.
Geocaches Need to be Protected
Geocaches need ample protection against natural forces such as rain, animals, and any other factor that might destroy it. Geocaches are protected using some weather proof containers so that they can stay as such for a long time. Also, as a measure for protection, the geocaches are normally hidden in hard boxes to prevent animals from damaging it. The protection method depends on the geocacher who creates the cache.
Geocaches are Meant to be Located
Several million geocaches are spread all over the planet. Each geocache is listed on geocaching websites, blogs, or newsgroups. As the geocaches are meant to be located, the geocacher who created the geocache should list his/her geocache with ample information that helps others find it. A geocache listing with incomplete description or misleading information is against the ethics of the game.