Originally Posted by Guerrilla
Yeah, I stumbled across these after digging through concept artists on Ironman3.
The artist is Cenay Oekmen.
Here is his site http://www.xotos.com
it says under the environments gallery "some of my environment work i did... I will update this section soon with some existing new material i did for Thor 2" so I'd say those are probably not for Thor 2 but maybe some stuff that was drawn up and *early on* under consideration to be used for Thor 1, but wasn't used.
If that is meant to be Surtur there, he's quite different from the comics, in this artists interpretation.