User blog comment:Darkcloud1111/''The Mark of Athena'' Plot Holes/@comment-3146930-20121014230006/@comment-4640327-20121023195855

So you're basing your wholle point that the doors can be "captured" and changed places. Nevertheless we could assume the DoD are Thanatos symbols of power making it impossible to be stolen by Gaea. Even if they're not, not even Hades can manipulate such passages, so I find hard to believe that a sleeping godness could do it. I stil think they'd have to be made by Death himself. The idea of the multiple doors and the main door sounds right.

Also I liked the other dimension sutff, I haven't thought of that. But what about Hazel's ghost wandering through the Asphodels fieldswithout never reaching Hades palace. We can assume distances could be manipulated, as in the labyrinth, an odd behavior for something that "exists".