Hi, I'm doing Virgil tomorrow too, just running through my notes now, and trying not to panic!
Just in my opinion, I would agree that, yes supernatural refers to the ghosts, strangeness of the underworld, oracle, Cerberus and all 'supernatural' creatures. Additionally all supernatural 'encounters', such as the pair of doves which come to Aeneas from his mother, the power of the golden bough, and the remarkable effects of the river Laethe.
Basically, the Underworld is a completely bizarre and nonsensical place, so the 'supernatural' theme is almost endless!
In my lessons we've focused a lot on the passages we have to know and I'm scared that I haven't acquainted myself well enough with the general themes and the whole of Book 6.
Does anyone know of a really good synopsis which I could quickly go through to check I have a grasp of all the important stuff?
Thanks, and good luck to everyone!