Shadows can either support the subject or be the subject. In this image, the photographer really liked how the shadows of the fence had a lot more character than the fence itself. To really emphasize the shadows, great care was taken in the editing process to emphasize the blacks and shadows.
Nikon Z6III | Nikkor Z 50mm f/1.8
f/4.0 | 1/2500 | 50mm | ISO 200