The parents haven't done anything wrong.
But if you have a kid who is adventurous, please encourage them to learn to map read and let someone - even if it's not you - know what you are doing. Could be a mate.
We should teach teenagers to respect the dangers of areas like this, regardless of what outcome this awful story has.
If that is the only positive thing about what happens, then that's something.
That's not saying 'dont go camping' it's saying be aware of the risks and act accordingly.