- To get to the ??? in Gusgen Mines, go straight across the first map and down the stairs. Use the left hand door to enter the second map.
- Go to the room in the northwest corner and follow the corridor that runs west from this room. This will take you down to a new map. Go to the second room.
- The ??? is located on the left side of the room toward the back. There is another ??? on the left side at the back of a shed (this is not the one you want).
- Use a pickaxe there and it will trigger the Wandering Ghost to spawn.
- Kill it and it will drop the Miner's Pendant. Bring that back for your reward.
- You are to go to the Gusgen Mines and pass the same trial as Oggbi's former student, Cornelia. Use a pickaxe on a certain hole in the mines to lure the Wandering Ghost out. Defeat it and bring back its "miner's pendant."
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