There were many ways to the underground headquarters.

As a result, she is taken prisoner to the underground headquarters.

And this underground headquarters would be the safest place on the planet; they'd make sure of that.

He claims they've found the underground headquarters and will raid it at midnight.

Unless they're wrong about the location of the underground headquarters.

I suspect he has already discovered the nature and the location of my underground headquarters in the hills to the east.

If it's just one car, waiting to tell everybody else where the underground headquarters is, I have an idea.

The rebels have set up an underground headquarters, a military official was quoted as saying by Interfax.

A military telephone exchange was installed in 1941 and served the underground headquarters.

He crossed the lobby and went down the stairs to Churchill's underground headquarters.