Clouds rose high over the mainland in vast columns of white and gray.

A vast column of white steam shot up into the night sky.

I sat at the foot of these vast columns.

A vast column of smoke and flame shot into the sky, darkening the sun.

In one picture, vast columns support residential areas built on raised platforms.

The vast column of the Helvetii followers watched them in silence as they streamed by without even a call.

A vast column of black and brown foam leaped hundreds of feet into the air.

Far out on the lake, two vast columns seemed to appear; between them were great billowing clouds of smoke and flame.

She rode at the head of a vast column of warriors more than a kilometer in length.

Then the lake exploded at its center in a volcanic surge, and a geyser rose straight into the air, a vast, black column of water.