Fog in Grand Canyon, Arizona.

Fog and Glory in Grand Canyon, Arizona.

Fog, summit of Flagstaff Mtn., Boulder, Colorado.

Morning fog, coastal California.

Fog, South Island, New Zealand.

Fog, Southern Alps, New Zealand.

Fog, Southern Alps, New Zealand.

Fog, Schwarzhorn, Switzerland.

Morning fog, northern Arizona.

Fog bow, northern Arizona.

Fog creeping across northern Arizona.

A sea of fog across the Painted Desert, Arizona.

Fog, San Francisco Volcanic Field.

Fog, San Francisco Volcanic Field.

Fog, San Francisco Volcanic Field.