I was doing maintenance on a cache of mine this past summer (Q series #5) and was about fifty feet away from my hide location when a naked man sat up! I turned to walk around the area, he called to me to "Not panic" and I just kept on walking.
Up till that moment I never wondered why the trail to that point was always mowed and well kept. Surprisingly, no one else has ever mentioned seeing him. Maybe I shouldn't have either.