This is a shot off my front porch at dawn. The rising sun illuminates the fog that comes off the Delaware River and the fog spills over into the little nearby valleys.
Post-processing: I used a 300 mm zoom lens for this, which gives this landscape shot a kind of abstract quality, I think. Post work was minimal - curves adjustments, a little sharpening, some black and white brushing in 'vivid light' mode set at 2%.
Thanks, everyone! Happy Halloween!
Your eye for light effect is so intuitive. Thanks for the motivation.