6) Firstly search the bookcases to find the Book of Baxtorian. To get the location where to go next, read the book.
After that, make your way to the Tree Gnome Village to get Glarial's pebble, which is south of East Ardougne.
Strategy: Use Ardougne teleport to save time.
7) Make your way to the dungeon through the maze.
8) Once you're in the tunnels, go to east where is the crate storeroom. Search the crates to find a large key (Picture).
Then head to the west past the hobgoblins to a gate where you will find a small gnome (Picture).
If you try to open the gate without the key, Golrie will talk to to you and will give you a tip where the key is.
Use the key on the gate to access the room.
Strategy: Using Ardougne teleport to save time.
Depositing your items in the East Bank is required.