A Goodreads user
A Goodreads user asked David Dalglish:

I always wondered, did you get any inspiration for the Towers defending against the Vile Wedge along the Rigon in Mordan from "Game of Thrones" and it's wall of ice? In Dezrel it is Man/Towers against Vile Creatures/Vile Wedge and in Game of Thrones it is Man/Wall against Wildlings/White walkers.

David Dalglish I'm pretty sure Martin himself had inspiration from the isolated geography of Mordor, from which I myself was mostly inspired in having a land specifically for 'monsters'.

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