Measuring at 5x5x1 square feet, Batu Hampar is a large rock slab that was placed in the west of the courtyard. The bedrock was reportedly used for the purpose of executions, where traitors of the Sultan would be laid by their executioners for beheading. According to a local legend, the fourth Sultan of Selangor, Sultan Abdul Samad, would spend his evenings ruminating on the slab while watching the sunset.
