How does piggy die from the book lord of the flies?

Yes Piggy does die in the Lord of the Flies. He dies in a very tragic way. After everyone abandoned Ralph and Piggy they joined Jack's tribe. On a visit to Jack's tribe, Piggy is trying to get everyone's attention and he is yelling that he has the conch and he is the only one who should be talking. Roger, who is truly evil, pushes a boulder over the top of Castle Rock and it falls and crushes Piggy and the conch in his hand shatters into a million pieces. After Piggy's death, madness breaks out on the island and the hunt for Ralph is on. :)