A blue structure with a green design on the front

The stone wall, a symbol of permanence, strength, and ancient craftsmanship, serves as the "monitor screen" in this scenario. Unlike our modern, sleek screens, a stone wall is rough, textured, and unyielding, representing the raw, unrefined nature of prehistoric life. Yet, by assigning it the role of a monitor, it suggests that even in prehistoric times, there might have been a form of "display" or a way of conveying information, albeit in a more primitive, symbolic form—perhaps through cave paintings, carvings, or other means of storytelling.