Piggy dies in Lord of the Flies when Roger deliberately dislodges a large boulder from above, which strikes Piggy and knocks him off a cliff to his death on the rocks below

. This happens as Piggy and Ralph approach Jack's camp to appeal for peace and cooperation. The boulder hits Piggy in a glancing blow from chin to knees, stunning him and causing him to fall about 40 feet onto the rocks, where his skull is crushed and he dies instantly

. At the same moment, the conch shell Piggy is holding shatters, symbolizing the complete breakdown of civilization and order on the island

. Roger's act is a clear display of his sadistic tendencies and marks a point of no return in the boys' descent into savagery

. Piggy's death represents the loss of reason and the final collapse of the fragile social structure the boys had tried to maintain

. Piggy's last words emphasize his belief in law and order over chaos, underscoring the tragedy of his death

. In summary, Piggy is killed by Roger pushing a boulder that strikes him and sends him falling to his death, coinciding with the destruction of the conch shell and symbolizing the end of civility on the island