I just finished re-reading Lost in the Wild by Cary J. Griffith, which covers the exploits of two young men, in separate incidents, who get lost in the BWCA. I find the stories of their experiences and those of the people looking for them fascinating. I feel the suspense even though I know the outcome.
One of the young men was an experienced and knowledgable guide who fell while searching for a portage. He hit his head and passed out for many hours. When he woke, confused from the concussion, he immediately began moving to get back to the lake, which of course got him lost. It was about a day before he got his memory back.