Barkos Sokrab Miniquest

The Dungeon
Items to bring:

80+ Mining

Rune pickaxe or better

Knife

First off, go to the 16 Diamond Dungeon. A portal leads the way to it that is to the north of Draynor Manor.

At there, kill Skeleton Trolls until you get a Tiny Skull.

Then, kill a Spined Dragon for a Spined dragonhide.

Use your knife on it to cut off the dragonhide, leaving the spines.

Next, kill Wall Creepers until you get a Creepy Arm.

Use it on the spines and it will be combined into a Spiny Arm.

Combine it into the Tiny Skull to get a Hand-made key.

It's killing time
Go to the end of the dungeon. The walls have been blocked by boulders. Mine through it. They are 4 layers of boulders. You can mine through either way.

Here is the estimated time taken to mine the layers.

Level 80-85: 10 minutes for each layer

Level 86-90: 7 minutes for each layer

Level 91-95: 5 minutes for each layer

Level 96-99: 3 minutes for each layer

After you have mined all the layers, use the Hand-made key on the door, and kill Barkos.

He is very hard to kill as he has tonnes of LP and can rapidly hit 640's. Worse, he can heal himself by 100 LP every time.

NOTE: If you die while fighting him, you will have to start over all again as the Hand-made key will be lost and Barkos will cause the walls to collapse into boulders again.

He will drop all his equipment such as Barkos' hood, Barkos' robe top, Barkos' robe bottom, Barkos' cape and Barkos' amulet.

Climb up the ladder in his house and the miniquest will be complete.

Rewards
Barkos' hood

Barkos' robe top

Barkos' robe bottom

Barkos' cape

Barkos' amulet

Conquered an island