The lightning continued to play upon the mountain crests, but still there was no thunder.

The mountain crests were sharply outlined against the clear sky.

She changed course at last, running north along the fringe of white while the sun dropped toward the mountain crest.

Looking back, I saw that the stormfront still had not passed the mountain crest, though the clouds continued to pile behind it.

It had finally breasted the mountain crest and crossed over.

It may be a messenger from above," and I nodded toward the mountain crest.

It shot into the clear as they passed the mountain crest.

The conversation ceased as they toiled up a mountain crest.

Close under the slowly flying Titan, a mountain crest began to steam.

She would have to climb over the edge of the mountain crest again.