Soldat is holding out hope that there's something about Helix, whether being so far under the water or some property in its make-up, that protects from the World Eaters. Otherwise surely in the past seventy years, it would have found them by now.

"We can put the unused torches from the bonfire down there, too," Soldat says. "Keep that safe, too. The aurora might be coming back soon, that'll be plenty of light for us. And keeping the light alive seems. More important than using all the torches we have out, for thirteen people."