Warning. Spoilers. I am trying to get to the vault in the Rhun Ruins so I can retrieve the last page of the Dirae Prophecy. I went into Graff Gem mines o find the passage to the vault, but although I went through it more than once, I wasn't able to locate the passage. I also tied to reach it from the Rhun ruins. I entered the castle and got practically on top of the vault entrance but was blocked by a door that was switch operated. I cannot find the switch. So, now I'm stuck. How do I get to that elusive vault?
Thank you. I went back down into the Graff Gem Mines and did a careful look for breakable walls, I found one that led to the bottom level of the mine and then I got into the Rhun Vault. You were a big help.