In the west, there's a 'duty of care', in which you must keep your facilities reasonably safe, but typically the prerequisite is EITHER (A) implicitly inviting people onto your property or (B) specifically inviting people onto your property (via advertisement, word of mouth, etc). If this duty of care is breached and someone suffers injury because of that, the property owner can be sued for damages like medical expenses.

Scenario B is the most common scenario in that you shouldn't have to be worried about stepping on nails or tripping over things if you go to your local ikea.

Scenario A is more state-by-state, but at least in my state (Georgia), you can "imply invitation" onto your property for something as small as an opening in a fence on your land, or a beaten pathway that seems to be frequented by dirt bikes - this is why 'no trespassing' signs are commonplace, so that you know that the property owner does not invite you onto their land and thus any injuries are at your own expense.

Great question! The real answer is "you can always sue anyone for anything, but you may not win".

But, since this is about Wyoming, let's see...

https://law.justia.com/codes/wyoming/2016/title-34/chapter-1...

As a non-lawyer, I'd say they have no liability. As a landowner, I'd never personally chance it, but I would see if I could give a 6' portion of the land to the state/federal government.

Yes