Chapter 3 - City of Ember

Doon pushed the main pipe door open. Then the pipe director showed Doon the girl who is going to show Doon what to do. 

They used black goop and tools to do the job. When Doon was sent to tunnel 97 he heard a rumbling noise. It was a river. When Doon saw the river he was soooo surprised!. He had never seen a real river before. He had only imagined what one looked and sounded like. He thought a river was like a tap but horizontal.