How long would they grope through the immense cloud, hunting each other this way?

Now the city was level again, amidst an immense cloud of dust, through which Chris could see the landscape begin to move solemnly past him.

From three miles out his eyes caught an immense cloud of smoke in the center of the Star.

And the smoke everywhere billowing up into this immense black cloud.

There it hung, gradually cooling into an immense dark cloud that slowly drifted to the north.

They braked to a halt in the immense cloud of their own dust.

In the sky, to the north, an immense, grey, mushroom-like cloud all at once formed.

Something keened through the air and exploded in an immense cloud of dust on the horizon.

Overhead an immense black cloud covered the moon; he judged that it would take at least ten minutes to pass.

An immense cloud of black smoke showed where the fire had destroyed a city block.