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In an isolated society, one girl makes a discovery that will change everything and learns that a single stone, once set in motion, can bring down a mountain.
- ISBN: 9780763688370
- Published: 2017 , Candlewick
- Themes: action and adventure, dystopian, Friendship, oppression, rebellion
- Descriptors: Australia, Intermediate (ages 9-14), Science Fiction
- No. of pages: 272