In the video, we see a woman riding a horse in an indoor arena. The horse is walking around the arena, and the woman is holding the reins. Another woman is also riding a horse in the arena, and they are both wearing helmets for safety. The arena has a wooden wall and a sandy floor. There are also some obstacles in the arena, such as poles and cones. The lighting in the arena is bright, and we can see the horses' movements clearly.