caption: The image shows an open book with a painting of a man on horseback, surrounded by a group of people, a wall, and text. The painting is detailed and vibrant, with the man on the horseback wearing a helmet and armor, and the people in the background wearing armor and holding weapons. The wall behind them is made of stone and is decorated with intricate carvings. The text on the book is written in a calligraphic font and is likely a description of the scene.