Hopefully, whatever's left of these 2 kids personal fantasy trip, only involves wild animals and no more innocent people.
Leaving them alone in the wilderness to let the bugs and elements take the fight out of them is not a bad idea, so long as they've made every effort to warn anyone who might be using their trapping cabin or recreating in the area.
I'd have to assume that with choppers flying, that all the logical escape routes are known and hopefully monitored, just in case.