Geocaching

So what is Geocaching?
Geocaching is an outdoor treasure-hunting game in which the participants use a Global Positioning System (GPS) receiver or 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 and "treasure," usually toys or trinkets of little monetary value. Today, well over 350,000 geocaches are currently placed in 222 countries around the world, which are registered on various websites devoted to the sport.

For the traditional geocache, a geocacher will place a waterproof container, containing a log book (with pen or pencil) and trinkets or some sort of treasures, then note the cache's coordinates. These coordinates, along with other details of the location, are posted on a website. Other geocachers obtain the coordinates from the Internet and seek out the cache using their GPS handheld receivers.   
The finding geocachers record their exploits in the logbook and online. Geocachers are free to take objects from the cache in exchange for leaving something of similar or higher value, so there is treasure for the next person to find. 

Typical cache treasures are not high in monetary value but may hold intrinsic 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, such as Travel Bugs or Geocoins, whose travels may be logged and followed online. 
Occasionally, higher value items are included in geocaches, normally reserved for the "first finder", or in locations which are harder to reach. Geocaches can range in size from "microcaches," too small to hold anything more than a tiny paper log, to those placed in five-gallon buckets or even larger containers.
(Source Wikipedia.org)

Geocaching in Mammoth Lakes.
According to Geocaching.com there are 55 Geocache sites within a 10 mile radius of Mammoth Lakes (Zip Code 93546). Caches are located at points of historic interest, close to hiking and biking trails, some are even placed on Mammoth Mountain or at other high altitude locations which may demand a little more endeavor to find. Mammoth Mountain recently launched a new and exciting way to team build or just spend a day enjoying the outdoors. Geocaching can be done in any season, on foot, on a mountain bike and skis and snowboards. If you have a group who are interested in Geocaching please send an e-mail to this Address for more information.