Re: Re-activating a dwarven citadel

As to making a citidel capable fo supporting life, I would ask why the
citidel had to lose air.  It did not lose gravity so it's atmosphere
should still be there, albeit possibly not breathable.  All it might
take would be a druid or just a good farmer.  Enough plant life would
freshen the air in... well, a long time, really.... but if the plants
were magically stimulated, the oxygen would be replenished .  Maybe some
hasted trees and/or algae?

Just my first idea when I saw your post.....

Tempest