In a Altoids-size metal tin box. Be careful not to be seen while hunting or the IRS might get you! Make sure when replacing the cache that you put it in the same spot you find it so that it does not get knocked off. Bring a pen with you to sign the log.
Hint is a complete spoiler, but considering it is kind of difficult to find, it is provided. Have fun :)
On March 16, 2011 a letterbox was place under the eastern side. This cache does NOT have a stamp in it, so if you find a stamp that's NOT the cache. See Welcome to ~ Acworth (Box #167543) if you want to log that.
****You must sign the cache log or your post will be deleted.****