Two cases from the wilderness of California. The 1981 disappearance of 14 year old Stacy Arras from Yosemite National Park, and the 1998 disappearance of 38 year old Jonathan Aujay from the Angeles National Forest. Both cases remain unsolved. 

Also, a review of the book "Highway of Tears" by Jessica McDiarmid. 

https://www.latimes.com/archives/la-xpm-1998-jun-15-me-60157-story.html

https://charleyproject.org/case/jonathan-aujay

https://www.nps.gov/aboutus/foia/upload/released-files-for-stacy-arras-case.pdf

https://charleyproject.org/case/stacy-ann-arras