Black coal tunnel
| Site: | Longwatch black coal mine |
| Landform: |  Cavern |
| Difficulty: | 14 |
| Risk Level: | |
| Skills: |  Extracting - 10 |
Task groups
Charcoal extraction
| Ratio | Task | Result | Difficulty | Duration | Components |
| 100% |  Extract black coal | | 18 | 00:30:00 |
Gemstone extraction
| Ratio | Task | Result | Difficulty | Duration | Components |
| 50% |  Extract obsidian | | 11 | 00:10:00 |