Letterboxing is a form of caching that dates back to 1854. Letterbox hybrids for those that don't know contain a stamp and a log book. The cache may also contain some small swaps. The idea is that you bring along your own stamp, and stamp the cache log book, then use the cache stamp to stamp your personnel log book. The idea is to collect stamps from as many letterbox caches as you can. If you are not collecting stamps you can treat this as a normal cache, by signing the log book and making swaps as usual.
There is a special hand-made Letter-Box stamp in the cache – please do not swap the stamp, as it is for letterboxers to stamp their own book.
