Geocaching is an outdoor sport or activity in which cachers use a GPS receiver to find a "treasure" hidden by other participants. Caches are secured in watertight containers, containing gifts and a logbook in which they record their discovery of the cache. The coordinates of the location of the caches are stored on online databases such as opencaching.se along with descriptions and instructions necessary to find them. On this site you can find everything about geocaching in Poland. Opencaching.pl in Poland was started in May 2006. This is the main Poland geocaching site. Our database working on opensource project Opencaching. Runs on Opencaching.PL opensource project.