The horse came through the darkness with determination to complete his job. Cold, dark, and disorienting he fights forwards. He's lit up showing his strained muscles and his exasperated breathing while also giving him a heavenly glow. The rider behind is solely depended on this beasts determination and willingness to comply. Without him, the riders world would condense further.
The balance between man and beast has moved us past our constraints. Imagine if we never had these animals to push through history?