Above and underlying the roar of the rain on the car roof, I could hear a deeper tone-a shaking, frightening roar of narrow sand washes trying to channel off a cloud burst.

As the crescendo of sound increased to a frightening roar, the Flying Lab began to rise.

With a frightening roar, it flopped onto its side and spewed a cloud of dust many meters into the air.

Its head seemed almost to brush the high ceiling and the frightening roar it opened its mouth to produce - before the voder took over - resounded in the chamber.

Then a frightening roar shattered the stillness of the night.

Cabs zipped past and a descending airliner passed overhead with a frightening roar.

A moment later there was a blinding flash in the sky, followed by a terrific and frightening roar!

I was on the Merritt Parkway and I glanced over to the passenger seat, where I saw something with brown scaly skin, long claws, huge fangs, and a frightening roar.

"The first contact with the audience was a frightening, deafening roar which terrified the orchestra," he said.

And then a moment later, the rift collapsed in on itself, taking with it the frightening roar that could be heard even in the vacuum of space.