I saw a rich, black, underground world opening at my feet, where everyone was in some deep and dramatic trouble.

Except that there could be no stars visible in this underground world.

Others had been unable to enter the underground world at all.

I wanted "peace," to be left alone in my underground world.

Rain, snow, and fog would not trouble the underground world.

This was an arguably underground world with which many Americans were unfamiliar.

Somehow that was a small island of security in this threatening underground world.

I wondered if there could be an "underground world" here like I'd heard.

Why attack the Rosicrucians in a book on the underground world?

"Most of us look forward to an underground world, yes."