Board Thread:Lore Discussion/@comment-24627553-20140316230248/@comment-27944105-20160921210406

Blademaster Jauffre wrote: The Aspect Of Akatosh wrote: The Snow Tower is the Throat of the World, and it was deactivated when Alduin awoke. No it wasn't. In fact, you can't deactivate that which has never been active.

The only evidence outside of MK's fanon is.... Oh wait, there's none.... It seems you're forgetting the Book of the Dragonborn, and Alduin's Wall.