For sure. Raven Rock is badass. As a kid my family used to go skiing in the area (Liberty mtn) so it blew my mind when I found out (via the Internet) that there was an "underground Pentagon" nearby.
Fun fact if you're curious about this stuff: Site R is pretty well-known, but slightly more obscure is the "Site C"[1] radio outpost atop Quirauk Mountain a few miles away. It's kind of funny since High Rock is a crowded day-trip destination, being right on the Appalachian Trail and all, but then just a few yards away at the edge of the parking lot, there's some stern-looking security dudes guarding the Site C access road. Also, Site R supposedly links into the "Presidential Emergency Facilities"[2] network, a bunch of weird grain-silo-looking structures historically used for communications and relocation https://coldwar-c4i.net/PEF/
The DMV area is dotted with all sorts of fun "spooky" stuff. I've always wanted to make some kind of website or map summarizing it all. coldwar-c4i.net is awesome and contains crazy amounts of information, but is admittedly pretty cluttered.
https://en.wikipedia.org/wiki/Raven_Rock_Mountain_Complex