The Calamity can be undone, but it's important to understand why it happened. Zulf said the Calamity failed, and he's right. The Ura stand as living proof of that.
At the heart of the Calamity was a simple idea. We never wanted to go to war again. Wanted to rule it out. We put a lot of folks against that problem: scientists, soldiers, spies, even me.
We sought solutions far beyond the city. We traveled near and far as the kid's going right now. Most of our efforts didn't bear fruit. Then there was a breakthrough. But it didn't come from one of our people. It came from an Ura, a brilliant young scientist named Venn.
Venn worked for the Mancers, the sharpest knives in the city's drawer. With his help, the Mancers devised a way to seal the Ura tunnels shut, in a flash.