By early evening all the sky to the north had darkened and the spare terrain they trod had turned a neuter gray as far as the eye could see. The storm front towered above them and the wind was cool on their sweating faces.

Stock photo: By early evening all the sky to the north had darkened and the spare terrain they trod had turned a neuter gray as far as the eye could see. The storm front towered above them and the wind was cool on their sweating faces. was taken by museofthenight .