https://www.youtube.com/watch?v=4QxGDQgGsHE , https://www.youtube.com/c/WhatLurksBeneath/videos
Park Rangers WONT TALK About Yellowstone National park https://www.youtube.com/watch?v=vV47gJuw6rs
https://twitter.com/canammissing/status/1405899396932202501 , https://www.youtube.com/c/canammissingproject/videos
https://www.treehugger.com/creepiest-places-in-us-national-parks-4869177
5 Extremely Creepy Things Seen in National Parks - Darkness Prevails https://www.youtube.com/watch?v=8YQX8K9Q_38
15 Creepiest Things Found in the Woods https://www.youtube.com/watch?v=B9NiKf_0fQc
https://www.thediscoverer.com/blog/ghost-stories-national-parks/X2y6tgZ60wAHRsVE
It can't all be a bunch of BS, so many people have seen too many strange things.
https://parktrust.org/blog/scary-stories-from-national-parks/
https://nationalparkobsessed.com/haunted-national-parks/
https://blog.theclymb.com/out-there/5-national-park-ghost-stories
https://www.goodreads.com/book/show/31830563-the-ufo-from-dyatlov-pass
https://paranormal-intersection.blogspot.com/search?q=The+Dyatlov+Pass
https://paranormal-intersection.blogspot.com/search?q=the+wilderness
https://desertshapes.blogspot.com/search?q=The+Brown+Mountain+Lights