Forest in late autumn during the sunrise in the mountainsForest in late autumn during the sunrise in the mountains
Snow-covered forest on the background of a hill in the fogSnow-covered forest on the background of a hill in the fog
An artillery piece against a background of black smokeAn artillery piece against a background of black smoke
A river in a misty valley against the background of steep cliffsA river in a misty valley against the background of steep cliffs
Непрозрачный воздух, насыщенный водяными парами, а также загрязнённый пылью, дымом, копотью и т. п..