Definitely check who owns it, and get permission. There is an area around here in NE that people roll their trucks through... But don't stay around for long. One particular night, I was driving through there, mud wasn't deep, but it was pretty slick (I think it was some sort of clay...) and I was in a 2wd F150. Felt I should leave, so I was gonna give her one more pass... DAMN! Put it almost right into a plot of trees. Caught a 4" branch behind the front tires, stuck'd. So here I am in the middle of the night, rain is DUMPING down, stuck truck, well, what do I see next but a b+w with the cherries on. This is going to go fantastically, I can feel it. Next thing I know, I'm in cuffs, and they're questioning what I was doing... If I would have known then what I know now, I would've just left the truck and come back for it the next day, if questioned, I would've just lied and said someone else did it. Told the cops I was "muddin", well, as it would turn out, they slapped me with a ticket with "willful reckless driving" which is automatic license suspension. Didn't get me for trespassing, but still... I think trespassing would've been a lighter charge. So just do your homework on local laws and the like.