Oh wow! I love the contrast between the deep shadows and the bright fire and light. And I like that you depict the Balrog with a discernible face and not just as limbed blob of fire. Sure, I'd run from a blob of fire, but I'd be much more afraid to stand against something winged and massive and obviously cunning. This makes Gandalf's stand seem even more heroic. Excellent!
Thanks for noticing. I had done a much more spare version as a preliminary and had been fortunate enough to show my work to Mike Kaluta( whose done some marvelous LOTR pieces himself) and he had first brought up the fact that the dwarves would have done a lot of stone sculpting. That's where all that stuff comes from. He's still right, as far as I'm concerned. The dwarves of Moria lived there for several thousand years, the place should crawling with stone craftsmenship.