My primary hobby, and one of the reasons that I bought a digital camera, started hiking and actually contributed to Frank (Flew) getting out hiking (leading to his bank account depleting hobby of digital photography), is Geocaching. In its basic form, Geocaching is a sport/hobby/activity where people around the world hide small containers (called caches) containing trinkets and a log book in various places and post the GPS coordinates (latitude and longitude) on a website (www.geocaching.com). Others log in to geocaching.com, search for caches based on location, and download, print out, or write down the coordinates to the cache. Then, using GPS receivers, they go out and try to find the cache. When they find it, they trade items (if you want), sign the log book (a must), and replace the cache where they find it. Then, back home, they log back into geocaching.com and log their find. I said basic form above because there are many different kinds of caches. Some are large ammo boxes full of stuff, others are 35mm film cans or painted pill bottles with just a log sheet inside (called micro-caches). Caches are rated by difficulty in terrain and in hiding, so a magnetic key holder on a light pole might be a 1/1, but a carefully hidden cache that requires a 5 mile hike, rockclimbing, and/or a boat would be a 5/5. There are multi-caches, where the coordinates of a first cache just lead you to a clue as to the next step -- some of these might require you to find 4 or 5 clues or intermediate caches to get to the real find. Others use puzzles, scrambled clues, pictures, or other creative ways to make the hunt more interesting. The GPSr will get you within 10-20' of a cache, so it isn't a giveaway to follow accurate coordinates -- most require quite a bit of searching once you get there (and some hides are fiendishly clever, like suspending it from a tree on fishing line). Caches can't be hidden on private land without permission (or on most National Park land) and they can't be buried. The neat intersection with photography is that I was amazed at all of the interesting places I have found while caching. Places that I absolutely would never have known existed if I hadn't been led there on a cache hunt. A huge sinkhole a half-mile from my house that required a hike up a power line cut (no roads anywhere), a multi-cache where each stage was the mouth of a cave and the final stop was a cave spring swimming hole (this one was 15 miles off the highway down some infrequently travelled rural roads), numerous overlooks, nature trails, greenways, and land trust lands. Even out of the way restaurants and areas known only to locals when on vacations or business trips. One of the driving principles in hiding cache is to lead people to interesting places (well, that and the strange thrill of finding things that 99.9+% of the people in the world don't know are there, even if they walk right by them). Several of the cache types require photo verification and many people post photographs taken along the way and of the cache areas (without giving away the locations, of course). There are even a few photo challenge caches (which might be adapted to an interesting activity on the contest/challenge forum). Anyway, a GPS is a handy tool when you are hiking and driving around looking for photographic sites and is also handy for recording (and refinding) areas where your photos were taken. There is a good chance there are caches at or along the way to places y'all might travel to take pictures, so it might be a nice diversion if the weather or light isn't right or the birds aren't there yet :? There are also local forums and meetings of geocachers. Here in Alabama it is www.alacache.com. Locals get together for trail maintenance, cook-outs, and group cache hunts. Check out www.geocaching.com and search for caches near your ZIP code -- I'll be there is a bunch.