geocaching is kinda like treasure hunting.. but no money... no real prizes.... its more of a hobby..... you hide cahces as they call it.. like boxes or things with little p[rizes in it... or medicine bottles with papers in it.. you use your GPS to find teh coordinates, which r provided on the website.... you can find other caches and sign ur names.. its all very confusing to me... :D www.geocaching.com is the website... it may help explain it better... i dont do it.. my mom did... she passed 4 1/2 years ago and i got left with all her things :D sorry i couldn't answer much better, but i dont know much about it but that...