Mourner Tunnels

Locations and Quests
The Mourner Tunnels are located in the Mourner House to the north-eastern part of West Ardougne (see picture). They are only accessible by wearing a full Mourner Gear aquired during the first part of Mourning's End Part 1 quest. The house is also involved during both Biohazard and Plague City

quests, although the tunnels remain unaccessible.

Tunnels and The Temple of Light
Inside the tunnels you can only find Mourners wielding what look like Crystal Halberds. You can find the Head Mourner

and a gnome tied to a torture table. Both of the NPCs are involved in Mournings End 1 and 2.During Mournings End Part 2 you will recieve a New Key from the Head Mourner, which will allow you to access the Tunnel that lead to the entrance of the Temple of Light, only known access to the Death Altar. Also, this cave-like area is the only place where Dark Beasts are found.