In the first room, you've found the strange alloy. Then, head to Gafannon. He will tell you something about the alloy. Now that you've visited Dr.West, you can directly head to the two guide outside the third room. After entering the room, you will find new clue(I've forgotten what it is). Head to Chanelle, the alchemist. She will give you an item. Use it and you will find a small button on the wall. Press it.
