Already over the next range they could see a mass of dark clouds.

There was nothing but me moving down the hall, eyes trying to see anything in the white mass of clouds.

By August 22 it was just a mass of clouds.

At the horizon, a dark mass of clouds had begun to form.

He looked like the sun peering forth from against a mass of dark clouds.

Looking up, I could see great masses of clouds about the higher peaks.

In the meantime, we've been cut off by the dark mass of clouds, so that we can go neither up nor down.

But here the arch over us was blue, cut by masses of white clouds.

I've tried to recognize something under the mass of clouds.

I looked toward the south; masses of gray clouds were rolling in.