|Location on World Map|
|South-Western Wilderness mine||←||Chaos Altar||→||Mage of Zamorak|
The Chaos Altar may be found in level 9 Wilderness just north of Edgeville Monastery. It is used to craft chaos runes from pure essence, providing 8.5 Runecrafting experience. Unlike other Runecrafting altars, the player must traverse a 4-tiered maze in order to reach the actual altar, though this may be avoided by use of the Abyss.
There exists a shortcut portal that starts at the third level. From there, the player should go east and then clockwise to the west ladder to reach the 4th level. After that, they should head east to reach the altar.
The maximum limit for crafting Chaos runes in one visit is 108. This would be achieved by having 75 Runecrafting, giving a 2x bonus, and carrying 54 essence to craft (24 in the normal inventory along with 30 in the 4 sizes of Runecrafting pouches. The maximum possible experience is 459 obtained while doing the above.