Glorious Gray Lesley Harrison

The picture has something of this: cavalry, mare, animal, mane, stallion, horse, equine, mammal, pony, equestrian, portrait, mustang, farm, domestic, wild, beautiful, field, nature, gelding, seated.
Perhaps it’s a drawing of a black and white horse running in the sand with it’s front legs in the air and it’s hair blowing in the wind.