| 作者 (Author) | Awdry, W. |
| Summary: Something strange is happening at the Blue Mountain Quarry, and Thomas the Tank Engine is digging for answers. | |
| 等级 (MML) | MM Level-1.2 |
| 年级 (IL) | Lower Grades (LG K-3) |
| 字数 (Words) | 241 |
| 类型 (Fiction) | Fiction |
| 系列 (Series) | Thomas & Friends; Step into Reading: Step 2; |
| Topic: Mysteries-Secrets; Transportation/Vehicles-Trains; | |
