Rebelling against the monotonous life of the moon colony, two boys go beyond its boundaries and discover a series of caves ruled by a super-intelligent plant-like being.
- ISBN10 1481418386
- ISBN13 9781481418386
- Publish Date 4 November 2014 (first published June 1969)
- Publish Status Active
- Publish Country US
- Imprint Aladdin Paperbacks
- Format Hardcover
- Pages 288
- Language English