A great resource for the cruiser on the move, Squirt's database of cruising grounds, truck stops, cottages and nude beaches contains tens of thousands of locations around the globe, searchable by region.
Squirt is a user-driven site and each listing is supplemented by what are often pages of user comments. While browsing to pick up some action while out of town, you can read whether a location is safe, currently being hit by the cops, really happening right now, or getting past its prime. With a free membership, you can also post your location, profile and pic (if you like), and organise hook ups with other site users as you go.
Sort of like gaydar with a knapsack and a love of the outdoors.