This is the coolest topic I've seen. I have a couple When I was a teen a couple buddies and I went camping in the El Dorado National Forrest. We decided to do some off roading (sans 4wd). We ended up getting stuck in the middle of nowhere (not even sure if we were in CA or NV) at this point we decided to hoof it for help. We came across some real scary looking dudes and their illegal grow. We tried to sneak away but they caught us. We explained our situation and tried to pretend when didn't know what they were doing. They were paranoid. Held us at their camp while one drove down to where our truck was stuck to "check our story". When he came back they loaded us in their truck drove us into the little town, took all our money for beer and then took us to our truck and pulled us out. Made us promise to never come back. We were so scared we got the **** out and never looked back. More recently scouting for elk near where I live my wife and I found an odd structure. There was a old generator hooked up to a winch in a tree. It was chained to a concrete "lid" covering something. We couldn't get it opened. Havn't been back yet??? Someone else said it may be covering a mine enterance. Don't know, not even sure who's property we were on. But I did mark it with my GPS. Another time I was atv riding with some friends up on Nicolai Mt in OR. On a trail way back in the woods probably 2-3 miles from nearest logging road we found a complete exhaust including muffler (guessing circa 1970's no Cat) stuck upright in a tree stump. Looked like it had been there for a longtime. Makes you wonder.