No longer needing to live underground, they were as if reborn.

"They're tough, hard workers, and they like living underground," her brother said.

As to the first, we've been living underground, and we mostly don't get to see the sun.

And I don't know how to live anywhere but underground!

Despite living underground, they have been known to climb trees and other structures in the short bouts of time spent on the surface.

He had read somewhere that people would live underground, and come up to take the air in their flying machines on Sundays.

"It is extremely difficult to live underground," she said before his capture.

Do we live underground like rats in order to listen to talk like this?

Living underground, you didn't notice things like rain or sunshine.

After years of living underground, the Dewar had developed excellent night vision.