Body stress and loneliness I can do no worries. It's that emotional/mental strain you were talking about. I'm the kind of person that starts getting headaches if I stay too long inside a worship centre or cemetary so I imagine being on that trail where so many people were so stressed out and exhausted and fearing for their lives every second when they weren't killing or being killed would probably reduce me to a blubbering mess.

It sounds pretty incredible though, I'm sure there's so much that can be learned from it.