Dalamund, from my understanding, is an artificial satellite(said a few times already, I know) though it's original purpose is still, at the moment, unknown. Based on the (possible) fact that there will be multiple new enemy types emerging after Dalamund hits, so it is plausible to say that it may have been used as a prison to contain the more aggressive mobs of the Allagan's era, Furthermore, It is currently being used as ammunition for a transmitter capable of pulling down celestial bodies. So we're screwed...