this vid got my brain thinking

door in the woods, no "keep out" signs (like they dont want anyone to know what it is even if they explore it)

pipe inside, insulated, what could it be carrying?

appalatchian mountain regions are covered in natural gas wells, but they were all "capped off" because overseas gas became cheap

but what if they aren't capped off but really are used to power deep underground bunkers and secret projects?