Ah ha!

Gets out her magnifying glass but can't quite read the postmark. . .

An envelope from across the pond! Printouts of places around my neck of the woods! (Did I mention that I used to teach map and compass skills in a Mountaineering course many years ago?) I'll have to put this away quickly--an engineer friend who loves this kind of game is coming over this afternoon to get some of my old software to revamp an old computer at his house. If he sees a navigation game it'll be all I can do to work it out myself before he gets out his GPS toys and gives it a try. (But I'll send them along to him when we finish, to recycle as you suggest).

What fun! Thanks you! Do I really want to find a cache labeled "paperclips in a urine bottle"? Hmmmm.

SRS