I turned in a circle, frustrated by the impenetrable darkness.

It was no longer possible to see through the impenetrable darkness!

There was only complete and impenetrable darkness around him.

I looked down again: the floor of the forest was a mile beneath me, lost in impenetrable darkness.

Its huge extent made it appear an impenetrable darkness from outside.

Silence looked up, but there was only an impenetrable darkness, as before.

The door was a simple dark opening, with nothing beyond but silence and an impenetrable darkness.

From the womb does not the child lie in impenetrable darkness?

And here a face moved from the impenetrable darkness into the light.

When Phil finally awakened he was still in deep, impenetrable darkness.