| Discovery Type | Geography |
| Discovery Name | Mammoth Cave |
| Rank | ★★★☆☆(3) (Number of Stars on Discovery Name card) |
| explanation | A limestone cave system located on the North American continent. Its total length is well over 500km. The limestone layer is topped with a layer of sandstone, making the cave extremely sturdy. |
| Era | |
| Deck Points | 5 (Required Deck Points for debate deck) |
| Difficulty | 7 (Rank of skills required for discovery) |
| Experience | 600 (For adventure jobs. Excluding company benefits, beginner bonuses, etc.) |
| Remarks | Large cave investigation request |
| 最終更新 | 2015-01-27 02:09:17 System |