What did Anu's spine look like?
Before coming to the High Heavens, Roy had seen this term more than once in the books of mortals. But since ancient times, very few mortals could truly go to the High Heavens, so the description of the Crystal Arch and Anu's spine almost all came from the imagination of mortals.
The Anu's spine was not a true spine but a super crystal with a size that exceeded everyone's imagination!
How big was it? Let's put it this way. Just its height alone exceeded three kilometers, let alone its width. In fact, Roy could only see its full appearance after arriving at the Crystal Arch.