You dont really need him to go on.
SPOILER
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- In that cavern, go to the east and youŽll find a passage. Enter there, fight your way to the room where a round table is, and there you must open a secret door. Enter, and go to the center of the room (if you get hurt, just take a look at the table in the previous room, it will help you

). After you do this, just go back to the previous room, "use" a statue whose halberd has moved, and go back to the circular room, where youŽll find some stairs now.