| Discovery Type | Geography |
| Discovery Name | Optimisticina Cave |
| Rank | ★★★☆☆(3) (Number of Stars on Discovery Name card) |
| explanation | A huge cave system in the northwest of the Black Sea. It is said to be the longest gypsum cave in the world. The caves are interconnected in a complex way, and are sometimes called the ``cave labyrinth.'' The temperature inside the cave is kept constant, and a beautiful and mysterious underground world spreads out, with stalactites and huge colored crystals. |
| Era | |
| Deck Points | 8 (Required Deck Points for debate deck) |
| Difficulty | 12 (Rank of skills required for discovery) |
| Experience | (For adventure jobs. Excluding company benefits, beginner bonuses, etc.) |
| Remarks | Discovery Name Card: 205 |
| 最終更新 | 2023-09-22 01:04:40 Nicolette |