I recently happened upon David Paulides work concerning missing people who disappear without a trace in National Park or Forest Lands. David has written a series of books titled Missing 411 which document the cases he has researched over the years that fit his criteria. The books are the best sources of raw data you can get if you are curious about learning more.
David excludes any cases where there are signs of foul play or animal attacks, these are cases with no suspects and no signs that can be found via tracking dogs or experienced trackers and large search parties with hundreds of people of several days to weeks. There are similarities between a very large number of these cases that are inexplicable, such as victims being found in an area that has been searched well over a dozen times, victims being found without boots on, etc.
The following are a couple of good interviews with David which I've listened to, but long so be warned.
David's Youtube channel is Canam Missing Project, https://www.youtube.com/user/canammissingproject/videos
Here is a couple videos of one cases where he traveled to the location of the disappearance to document.
David had also asked Survivorman's Les Stroud to try and recreate one of the disappearances of a young boy who had been found miles away from where he disappeared in pitch black of night.
I have been extremely interested in these cases personally, thought I would share here incase anybody wanted to learn about this stuff.
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Originally Posted by Hambo
