Kenny Veach, was a 47-year-old avid desert hiker when he went missing in 2014.  He set off to find this mysterious M cave that caused body vibrations the first time he found it but he never returned.  Kenny's cell phone has never been recovered.  Did something supernatural happen to Kenny or did he commit suicide in a cave and nobody can finds him?

Sources:

Kenny's last video: https://www.youtube.com/watch?v=EfdrY-2sROQ