K2 is considered the world's most treacherous and technically challenging mountain.

Wild and treacherous as these mountains were, they possessed a rare kind of beauty.

Still he was able to survive the climb up that treacherous mountain.

So was the rain, heavier now, making the steep tracks of the mountain slippery and treacherous.

Earlier this century it had a reputation as a treacherous mountain, with lots of accidents on the summit ridge - and it still claims lives.

These were treacherous mountains, vast, towering and incredibly massive.

The pilots, too, prefer the perils of airdrops from 1,500 feet in treacherous mountains to slaughtering Iraqis.

The film's long second half follows the two parties through dusty highland valleys and treacherous mountain passes.

To gain the whaling station, they had to traverse treacherous snow-covered mountains.

We flew over those treacherous mountains to China and down to Calcutta.