As Tuor already explained, it is not called Mt. Doom by Tolkien, so I'll leave that part alone.
Zitat von Aideani
1) What do you think a Balrog would do with the one ring?
This depends on the Balrog. Let's take Durin's Bane as example, since it is the only Balrog known to have survived into the Third Age.
When it was serving Melkor, Sauron outranked it. So now that Melkor is gone it is possible that it'll just see Sauron as its new master and deliver the Ring.
But this to me seems the least likely outcome because this particular Balrog seems to have very little loyalty (it simply abandoned Melkor when things got rough and fled to save its own metaphorical skin).
My guess is it'd just use the Ring for itself, but whether it would succumb to Sauron's will within the Ring or resist and overcome it is unknown. I'm assuming it would be able to overcome it, as Durin's Bane and Sauron are likely relatively close in terms of willpower (both being among Melkor's Top Maiar), and Sauron poured a lot of his personal power into the Ring; effectively handicapping himself by dividing his own power.
I will assume Sauron put less than half of his power/will into the Ring (he wants to dominate others via the Ring, giving it more than half of his own power might make a semi-sentient Ring dominate him instead). Much like Gandalf and Galadriel, a Balrog seems a likely candidate to overpower less than half of Sauron's willpower and become a new Dark Ruler itself by harnassing it to overthrow Sauron.
2) How could Sauron forge the ring with everybody around?
There was nobody around. Sauron forged his Ring in Mordor, the other Rings of Power were forged in Eregion, half a continent away.
Geändert von BirdofHermes (22.07.2013 um 22:17 Uhr)
[I]In the sea without lees standeth the Bird of Hermes.
[/I][I]When all his feathers be from him gone, He standeth still here as a stone.
Here is now both white and red, And all so the stone to quicken the dead[/I][I].
The Bird of Hermes is my name, Eating my wings to make me tame.[/I]