Head through the door and search the chest for the first piece of the map

First map piece: Once you are out of the maze, go to Oracle. She is on top of Ice Mountain which is south of Black Knights Castle and north of the entrance to Dwarven Mine. She will tell you to get these LAND OF CHAOS Gold items:

- Crustation Cage: Also known as a Lobster Pot. You can get this in the Fishing Shop in Port Sarim.

- Unfired Bowl: Get this by making Soft Clay from a clay ore and a bucket/jug of water and using the Soft Clay on a Pottery Wheel.

- Sheet of Silk: You can buy this from the Silker in Al Kharid.

- Wizard Mind Bomb: Buy this from The Rising Sun bar in Falador from Barmaid.

Once you got these 4 items head back and talk to Oracle. Then go to the Dwarven Mine. Go east and there will be a secret passageway. Head through the door and search the chest for the first piece of the map.

Second map piece: The first piece of the map is located inside Melzar’s Maze south of the Crafting Guild. Make sure that you’re well equipped and have a lot of food. Now head to Melzar’s Maze and use the key Oziach gave you on the door. Head inside.