large group of people on horseback in a sandy, open area

large group of people on horseback in a sandy, open area. Many of the riders are wearing casual clothing, with some in more traditional attire, like a white robe. The horses are of various colors, mostly dark shades like black and brown. Some riders wear helmets or hats. A person in a green outfit is running alongside the group. In the background, more people and horses are visible, indicating a gathering or event. The sky is overcast, suggesting a dull or cloudy day. The ground appears sandy or dusty. The overall scene conveys a sense of movement and activity, potentially part of a parade or ceremonial procession.