In this scene, the photographer caught an amazing mix of light and shadow, and the dark horse in the middle of the picture (with the tree in the middle of the green paddock) has the light reflecting from his back.
The photographer also took this picture exactly at the right moment of the horse lifting the diagonal pair of legs in trot at the highest point. The light underneath the horse’s feet makes it appear even higher, as if they are floating on air. This reminds me of a sentence my instructor told me: “In true collection, the horse moves like it only accidentally touches the ground for a moment.”
Tango is just turning