Just want to start off saying this theory has little if any impact on the story of the books, it's just something that bothers me.  I, like many of you I'm sure, have spent an inordinate amount of time staring at the world map. Something that has raised a lot of questions for me is the Stepstones, the remains of an ancient land bridge that the First Men used to cross from Essos to Westeros. The Children of the Forest used their magic to shatter the land bridge to try to stop the First Men's