Finally a silver-gray mass loomed through the trees ahead.

At this stage body mass - or size - looms ever larger in importance.

In front loomed a dark mass that might be the rocky bank.

On the screen the rocky mass loomed larger than the ship.

To the right of it loomed the dark mass of Phobos, standing on its side.

Through the black night loomed a ghostly mass of gray.

A huge dark mass loomed from the pale bottom sand and filled their vision.

And almost immediately they sensed something up ahead, a mass loomed out of the dust.

Presently a solid mass loomed out of the frosty mist.

A solid mass of technicians loomed behind him, blocking his retreat.