Now I'll be the first to admit I'm not especially good at solving ciphers, but I can usually manage if the cache tells (or at least gives a good hint towards) the decryption technique needed.
Although as a puzzle-cache-hider, I don't always want to give those hints; that's why I think of this as a rotten puzzle.
All you have to do is solve the following and take the hike in to find the cache:
Yjbe eaib yauo ekxq luvy wkhu tyje kjSe dwhq jkbq jyed iDem xuqt jeDe hjxv ekhj xhuu
jmud jody dufe ydjj mevy lued uMui jiul udjo jxhu ujxy hjov ekhf eydj vylu vekh dydu
The cache container is similar in size and shape to that of an average lock'n'lock geocache container. Good luck with this, the tenth puzzle cache that I've placed!