Looks like it was a sad ending 40 or 50 years ago when it was left there!  From this angle the frame looks surprisingly good for an NS car from the era, though. 

Wonder why it was abandoned - maybe thrashed through the trails as somebody's "woods buggy" until it gave out?  On another note, a buddy and myself were considering doing that to a '69 Beaumont two door hardtop in the early 1980s.  It was sitting cheap on a dealer's back lot, but I didn't have the heart to do that to a Beaumont even back then, when it was only a clapped out, rusty used car at the time...

On the bright side, the fate of most of these in NS would have been that they rotted out, were towed to a scrap yard where they ended up as little cubes to be recycled into something else.  At least this one is still around, even though it is in a sad state... :)