>The driving instructions led to a mountain peak that was 70 miles from Washington D.C. known as Raven Rock. Was this a meeting place as there was nothing in the region? Graff said that big concrete bunker doors could be seen, with a guard shack, chain link fence and concrete bunker doors past it.
>Graff said that this was a facility that was not on any map, and which Graff had never heard about.
It's not that secret: https://fallout.gamepedia.com/Raven_Rock