Il Principe (of Beleriand...)

[alatar]

Originally Posted by Anguirel

I would be inclined to head east over the Ered Luin, or in the Ered Luin themselves. A mountain stronghold could be held with a network of caves beneath it. Co-operation with the Naugrim would therefore be essential. No Hidden City vibe, just hold the place by force of arms. Position it some way south of Himring so Maedhros faces your enemies before you do...maybe some manipulation of mountain rivers would add to defensive capabilities...

Not to pile on, but adding to what Kuruharan has already stated, but your mountain fortress would be prone to siege, and unless you can eat rocks...Even Morgoth was smart enough (or lucky enough) to have a back door.