I think, this is where the vanguard influence of hugeness comes into play. Consider how the large Dwemmer "dungeon" in skyrim was - I think the equivalent of 10 square miles relative to character? the one with all those exit points. We do know there is an interesting somewhat slowly spinning geode, almost in orbit and perhaps detached where there might be an excruciatingly hot forge in the "air" way up there. So, does that make amberfaet a sort of world dungeon of its own? Maybe not something you can go over, but you would have to go through.
