Bubble over Atlantis

I can't seem to find any confirmation as to what exactly the bubble over Atlantis is or how it came to be. My best guess is it is some form of magical protection from attack. Anyone know a definitive answer on this? Ombra Lupo (talk) 13:17, August 26, 2013 (UTC)

Nope. No idea what it is on Earth-16. --Tupka217 14:28, August 26, 2013 (UTC)

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.