[ryandrake]

Yea, I think the liability thing is key, at least in the USA. I have no problem in concept with allowing the public to roam on my property (as long as they're not taking or damaging things), but I wouldn't want to allow it if they could sue me and win because they tripped on a rock or something.

[ghaff]

Anyone can sue anyone for anything. I assume that if you trip on a rock or a tree root on a trail on someone's land, suing would be a man bites dog thing--but so could any number of events. Obviously if you deliberately put some hazard of a trail crossing your property, that could be different. (Though probably edge cases--tricky natural hazard on a well-established trail you didn't do anything about.)