Thank you, that makes sense.
You're welcome! I also hate to say this, but, unfortunately, there is danger in doing these hikes, especially alone. Forget the snow and ice, anything can happen. As others mentioned, Ling didn't have much time to shake off jet lag. Maybe it contributed to what happened to him, maybe it didn't. Even the most strongest and fit athlete can have accidents or die from heart attacks or strokes, if proper medical attention isn't given right away. Look at Jim Fixx- a famous runner- he died of a heart attack on his morning run. Bob Harper, trainer of The Biggest Loser, who is also a vegan and health nut- he had a heart attack.
It makes me nervous when people attempt hikes like this alone, prepared or not isn't the point. What good is a sleeping bag, freeze dried food, water, etc if you fall, hit your head and lose consciousness? Or if you have a heart attack or stroke and can't call for help. Plus sprains, fractures, broken bones.
Ling's hike unfortunately didn't have a sign in area at checkpoints, but even then, those aren't a guarantee of location of a person. For instance, we have the Appalachian Trail not too far from us that goes up and down the east coast. Many folks love to do this trail and bring their bikes, camping gear, etc. They have checking points to sign in, which is great in most cases to try and pinpoint their last location. One lady disappeared years ago and somehow survived 26 days:
Hiker who went missing on Appalachian trail survived 26 days before dying. Previous articles mentioned that her and her friend had signed in- Gerry's name on the trail was "Inchworm". However, she went way off course, when she had to go to the bathroom. She wasn't found for over two years.
So I think of Gerry, an experienced hiker herself, and how easy it is for someone with years of experience to get lost.