Board Thread:Suggestions forum/@comment-34204318-20180322053453/@comment-26428291-20180323074719

LordofLustria wrote: What if we made a special numernorian obsidian block that's mined from the misty mountians and acts like obsidian from mincraft with some texture differances, a brick, stair, pillar and slab variant and spikes that deal damage when you touch them and we'll have the desired effect?

Númenóreans mining in the Misty Mountains? If we’re going for something harvestable like this then for the sake of gameplay it would make more sense to place it under Meneltarma, however that probably doesn’t make much sense.

Are they really going to mine of their sacred mountain (yes, I know. Meneltarma was mined out for mithril.) and then haul it over on boats to Middle-earth, and drag it up to the Ring of Isengard?

I think it’s probably more likely that Methedras was once a volcano (crater in shape) and that the Orthanc-stone is leftovers of that. The Black walls of Minas Tirith could have been hauled over in bits from Mordor.