User blog comment:Power565/How many planes are there/@comment-24460609-20141231085043/@comment-25893030-20150122122722

I know, I meant that if we consider Earth as Gaia's own, then Heaven and Tartarus would be considered places as well considering Earth isn't a realm, it's just part of the physical realm.

And no. Erebus actually doesn't side with Nyx or anything, so he definitely would not be in the SR. As a matter of fact, I remember visiting in the search for his essence and it was his own place, and it wasn't the SR. I don't have a name for it though.