"The mountain air is so clear that on some days you can see over a hundred miles."

She took a deep breath of the hot mountain air.

Looking up from twenty feet deep, the water was clear as mountain air.

Smith's voice was quiet but cold as the mountain air itself.

I took a deep breath of the cool mountain air.

The sound of the shots cut through the still mountain air.

"What do you say we go outside and enjoy the mountain air?"

I took a deep breath of the mountain air that was supposed to do me so much good, and turned away from the window.

But something was missing in the thin mountain air this year.

And all this activity takes place in pure mountain air.