I was out with my sister a few weeks ago, looking for one on a sign on the side of a highway, which runs through bushland, so 'miles' (kilometres, I'm Aussie lol) from any town, and while I was behind the sign looking, a police car pulled over to make sure we were ok, he had actualy driven past, and had to turn back the other way, pass us, and turn around again to park on the side of the road we were on lol. We just explained what we were doing, he had heard of Geocaching but needed a bit of an explanation, which he was fine with, just wanted to check we were ok, 2 females parked on the side of the road