Although both know it is forbidden, Amy and Axel hope that by following the countless ramps leading upward they can escape from their filthy subterranean world.
- ISBN10 0765345676
- ISBN13 9780765345677
- Publish Date 14 March 2003 (first published 22 September 1980)
- Publish Status Out of Stock
- Out of Print 4 April 2022
- Publish Country US
- Imprint St Martin's Press
- Edition New edition
- Format Paperback
- Pages 160
- Language English