Stonemaybe wrote:The Numen wrote:Technically, it'll have been Simjen who destroys all the forests, with his "repairing the world" action.
I tend to agree! What else, I wonder?

Oh, no doubt Abyssal War.
Whatever denizens resided in the crack of the shard Simjen's attempt was performed upon most likely tried to flee elsewhere. If the Ice Walls crumbled in the attempt, my guess is they would have come up, rather than flee to other areas of The Abyss...
Besides, The AllFather has to have been awaiting a reason to start one since he told us about the previous ones before the Third Age ever launched.