Board Thread:Suggestions forum/@comment-27200931-20170426224854/@comment-31907131-20170428024125

Dragonovith wrote: Gandalfthegreatestwizard- EpicMithrandir wrote: High King Ithilion wrote: Utumno wasn't in use during the War of Wrath, so it wasn't destroyed...

Ithilion, Discussions Moderator (Auta i lómë) 02:22, April 28, 2017 (UTC) It was. Tolkien Gateway says it, and no doubt The Sil would agree if I had a copy handy. "The Valar attacked Udûn in full force, and destroyed it utterly, carrying its master back to Valinor as their prisoner."

This is when Tolkien Gateway says that Utumno was utterly destroyed. It refers to that quote I posted earlier, which also states that an unknown quantity of caverns and vaults remained. Hmm. Then the only possibility is that TG is actually wrong, I believe. It was not utterly destroyed at that time when they took Melkor prisoner. The ruin of it was destroyed completely in the War of Wrath, as the host of Valinor was marching towards Thangorodrim. I am absolutely certain of this.