The Hardy boys' search for stolen gold leads them to an abandoned mine where, in the depths of the earth, they are attacked by outlaws.
- ISBN10 155709148X
- ISBN13 9781557091482
- Publish Date 1 November 1996 (first published May 1973)
- Publish Status Out of Stock
- Imprint Applewood Books
- Format Hardcover
- Pages 214
- Language English