Furthermore, the rocks surrounding Ship-Trap Island is fundamental to the story’s setting, as, without them, the plot cannot make sense. These large boulders that surround the island provide privacy, but also attracts and traps possible prey for the general. Whether Zaroff wishes to attract or repel people to his island, he can do so with help from his channel lights. He describes his plan to Rainsford, “‘They indicate a channel . . . where there’s none; giant