I'm not quite sure on how "country" it is where you are, but we've had more trouble with whackadoo trespassers at our house in town than we have out at the farm... including some teenagers setting up "camp" and starting a fire in the somewhat wooded lot between our house and the neighbors. You would have thought they were headed up Everest for the amount of crap they took out there with them, all of 2 blocks from home. I digress- I hope it is someone confused and looking for a place to feel close to nature, but I'd certainly give the authorities a head's up. If he's not doing anything wrong, he won't have anything to worry about.