In an indoor riding arena, a light brown horse with white spots is being worked on a long lead by a woman in black athletic clothing. The arena has a sandy surface and is illuminated by daylight streaming through translucent panels in the angled roof and also through windows along the arena's long side. Another person and horse are faintly visible at the far end of the arena. The woman is holding the lead and gently guiding the horse, which trots away from her.