Mythril Mine

The garrison west of Eisen Bridge will be opened. Follow the trail leading to north. The trail will split to the west, where you’ll immediately find the mine entrance.

Tip: The Succubi in the area provides good JP, especially if you're grinding and chaining your "Unscathed" bonuses.

B1

After the scene, you’ll be thrown in a fight against a Black Axefighter. He’s weak to lightning and has 3000 HP but that shouldn’t be a problem to you at this point. You have to find all the canary boys in the mine and that means you have to fight some of the guards as well.

Go straight to the west to find a guarded chest. Defeat the guard to release canary boys and for you top loot the chest. Obtain an X-Potion from it. Head to the southeast corner and defeat a guard to free up two canary boys. There are another two found at the end of the middle southern path. Head to the southwest to get and Earth Drum. Head to the middle-west and defeat another guard to release two more boys. Now take the stairs down in the middle of the map to proceed deeper in the mine.

B2

Head to the east and defeat another guard. Two more canary boys will be freed. Continue to the northeast to find another guarded chest. Defeating the guard will free two more boys and give you access to the chest containing a Turbo Ether. Just south of the adventurer lies another guard. Defeat him to free two more boys.

There’s a locked blue chest to the northwest and another guard to the southwest corner. Head to the middle of the map to find a chest containing 1000pg and another guard southeast of the chest. After the kids have been rescued, save your game through the adventurer to the north and leave the mines.

Once you’re in the world map, you can go back to Hartschild to heal up or just venture north. Follow the trail to the north then east around the mountain range then northwest until you reach the ominous-looking building.