Okay, I just looked up the temperatures for the dates Oct 8 - Oct 9 for the general area and there was a low of the mid 40s on the 9th and down to high 30s on the 10th of oct 2009!!
So, yes they could die from exposure. If there is a cool breeze and you are unprotected, you can die if it is in the 50s.
So my guess is they stopped to walk around, take a potty break, look at the view or whatever and got lost. It happens ALL THE TIME. In fact there is someone missing right now who wandered away from their hunting partner. Anyways, they end up lost and die of exposure before they find their way back. The adults could have gone to sleep and never woken up.
Rest in Peace.
So, yes they could die from exposure. If there is a cool breeze and you are unprotected, you can die if it is in the 50s.
So my guess is they stopped to walk around, take a potty break, look at the view or whatever and got lost. It happens ALL THE TIME. In fact there is someone missing right now who wandered away from their hunting partner. Anyways, they end up lost and die of exposure before they find their way back. The adults could have gone to sleep and never woken up.
Rest in Peace.