The location is in a intersection. Once your done please push it up and lay it on the bolt<(hint). The cache container may be very complicated. Once u find it, find a very small gold line on the cache and pull the end most close to the end. It will pop open, then make sure u push it close. The cache is a all black container. VERY IMPORTANT- make sure u bring a pen/pencil to sign the log book. There may be some muggles but went i went to hide it i only saw a few. Good luck finding it.