They cut wood and then used Piggy's glasses to reflect the sun so the wood would catch fire.
Piggy
Ralph thinks that the beast on top of the mountain top is preventing them from the fire
The side of the island with the little bit of smoke in "Lord of the Flies" is the south side of the mountain. This is where the boys start a signal fire in an attempt to attract passing ships for rescue.
Piggy was the last boy to reach the top of the mountain.
Jack led the other boys as they rushed away from the platform and towards the mountain even though Ralph had not called an end to the meeting.
All of the boys climb the mountain and build a huge fire.
The mountain is mentioned in Lord of the Flies at various points throughout the novel. It is primarily associated with the signal fire that the boys try to maintain in order to signal passing ships for rescue. The mountain also becomes a symbolic focal point for the boys' struggle to maintain order and civilization on the island.
penis
The boys in Lord of the Flies are from England, to quote Jack, in chapter 2: Fire on the Mountain... "After all, we're not savages. We're English; and the English are best at everything."
The boy who was talking about the "beastie"
Piggy finds the spectacles in Lord of the Flies. He uses them to start the signal fire and later relies on them to see clearly.
Piggy is the one who suggests using the glasses to start a fire in "Lord of the Flies." He realizes that the lenses can concentrate sunlight to create a flame.