User blog comment:LOTRMod/On Canon/@comment-26116279-20150421230853

Tolkien left a lot out of the lore, he did not explain many things he could have explained because either he did not have an explanation or he wanted us to come up with our own theories or ideas of what the unknowns in Lotr are so i think it is perfectly acceptable in the light of canon for you to make the moredain and taurdain