The Aldens are exploring underground caves! But when their trail markers are stolen, how will they find their way out?
| ISBN: | 9780807554111 |
| Publication date: | 1st January 1996 |
| Author: | Gertrude Chandler Warner, Charles Tang |
| Publisher: | Albert Whitman & Company |
| Format: | Hardback |
| Pagination: | 121 pages |
| Series: | The Boxcar Children Mysteries |
| Genres: |
Crime & Mystery |