The passage illustrates the rockpile's symbolic meaning through its depiction of danger and reckless behavior.
The passage helps establish the rockpile's symbolic meaning by emphasizing its dangers and the reckless behavior of the boys playing on it. The boys grappling on the heights of the rockpile and engaging in dangerous activities like throwing stones at it highlight the risky nature of the rockpile. This portrayal symbolizes the potential harm and risks associated with the rockpile, adding depth to its symbolic significance in the story.