The Demon Oak Quest/Spoiler

Required Equipment

 * Axe
 * 1,000 gp

Method
You have to walk on the 5 squares but it is believed the 6th switch is a random spawn like a Boss monster. As of yet nothing about getting in can be confirmed. But a random spawn switch is the most obvious to keep such rare items truly rare. (best guess) It also explains the patch, the switch was stuck in respawn mode and just kept respawning allowing people to keep doing it. So CIP adjusted the bug to be a random spawn like boss or raid. All this is speculation. No one can say for sure this is how it is done other then CIP. Only time will tell the truth.

Once inside, go out and talk to Oldrak who will get you a Hallowed Axe if you give him a normal axe and 1,000 gp.

Return to the demon oak passage with the axe and attack 4 locations 1: the left spiked ball 2: the bird 3: the face of the tree 4: the right spiked ball attacking the four parts will cause monsters to spawn. Once attacking the area's you have to keep attacking the same area until it puffs smoke then that part of the tree is "Dead". 

Once the tree is 100% dead, you can leave and then head to Oldrak and talk to him about the Demon Oak, once this is done, go to a grave stone which is located south of the demon oak area, with the name of "Yesim Adeit" (Yes, I made it).

Use the grave stone to enter and choose your reward. 

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