It does seem that possibly he’s taken the difficult route, not realising how bad it was, or knowing but seeing it as an adventure, or possibly confused as he didn’t feel great, and has possibly had a sudden medical event like a heart attack.
i hope they find him and I hope he’s alive when they do. He’s a wife and four children.
I know in a lead up to a heart attack you can feel unwell. My father in law was complaining of not feeling great, thought maybe he’d eaten something dodgy, he felt a bit sick and dizzy, and had a massive fatal heart attack a couple of hours later.