User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-4521561-20121224015716/@comment-3146930-20121224184218

But how many souls go to Tartarus? Most souls, even the really evil ones go to one of the three fields of the Underworld (four if you count the Isles of the Blest). Those are all easy to get to. Even Nico managed to rescue Hazel when he found her. But Tartarus is a large pit that sucks you in and once again, Percy and Annabeth aren't dead, so it isn't like the gods can just call up their souls. Even if they died in Tartarus, would their souls stay in Tartarus or go to the judgement gate? Would they be able to return to the mortal world without bodies to return to or would they end up like Medea or Midas, with creepy glowing skulls and stuff?