the thing that crawls out of the forest is Simon.
Simon
He sees a snake beastie thing in the jungle.
Piggy is killed at Castle Rock in Lord Of The Flies.
The jungle catches fire
If you are talking about the climax of the story, it is when Simon is killed
Jack, Roger, and the Littluns kill Simon when he shows up to warn them.
bear
He sees a snake beastie thing in the jungle.
Piggy and Simon are both killed
The jungle
Piggy is killed at Castle Rock in Lord Of The Flies.
The lord of the flies is the head of the pig that Jack and his 'tribe' killed, they left it on a stake as an offering to the beast (ie)
Simon, a character in the novel "Lord of the Flies" by William Golding, emerges from the forest during the dance on the beach. He is mistaken for the "beast" and tragically killed by the other boys in a frenzied state. This event marks a turning point in the story, leading to the breakdown of civilization among the boys.
The Jungle
jack and his hunters
Simon and piggy
Jack never died
The jungle catches fire