Geocaching is a high-tech outdoor treasure-hunting game played with a GPS-capable device. Locate hidden containers called "caches," trade items of equal or greater value found in some larger caches and then sign the logbook before sharing your experience online. After obtaining coordinates and hints from www.geocaching.com, you can begin your search. Download the free app. Nearly all Coweta County parks and recreation facilities contain caches; visit the website link for the full list.