The new key is obtained during the Mourning's End Part II quest by talking to the Head mourner in the basement of the Mourner HQ in West Ardougne. It is used on the west basement door to enter the tunnel to the Temple of Light, dark beasts, and runite ore. It's also used during Within The Light. This key may be added to the steel key ring. If dropped, another can be found on the desk in the south-east room of the basement.
- Since 20 January 2009, the new key was added to the list of keys that can be added to your steel key ring.