Upon zoning into Castle Zvahl Baileys (consult the map for ease of navigation), move westward to the 4-way intersection at G-8; head south from here, down the stairs that you will soon come to, and then on to the second map through the border of E/F-8.
On Map 2, move south to the bottom of I-9, finding a group of Orcs, then go up the stairs here; move west to G-9 (Yagudo) and go back down the stairs there, being careful to not fall off the circular ledges along the way; turn left from the staircase heading east, when you reach a gate, turn left again. Take the next right turn and make your way to another short stairway appearing on your right at the border of G/H-8 and go up; from there move west to zone into Castle Zvahl Keep.
Upon entering Castle Zvahl Keep, follow the right wall and enter the first Iron Bar Gate to the north.
Bear right and trade the key to the locked Ore Door on the left, before the next iron bar gate.
Some strange occurrence from twenty years ago is now casting a shadow on the growth of the star tree saplings. Two of the ex-ministers may have an idea of the cause. After receiving instructions from them, head to Jeuno and then on to the Northlands.
SPOILER WARNING: Click here for additional details about this story line.