I've recently discovered inner earth conspiracy theories, and they're wild. I'm a fan of all mystery/conspiracy/alternative history stuff and thought I'd gone down most rabit holes, but this is equally dence as the ancient alien stuff. Off its box with just enough "oh, that's actually a head scratcher." to be rather enthralling. If anyone fancies a wild ride, get your tin foil hat on and youtube Inner Eath Conspiracies or Agartha.