Investigate the Death

This is the start of the Fury Epic Weapon Quest line

Pick up the quest from 192, -44, 169 in Darklight Wood

Head to -359, -50, 39 (don't have the npc's name) tells you to find your way to the top level of the Shadow Oak

Next person you need to talk to is Atalika (442, -24, -268) this then allows you past the barriers to the upper levels

Now talk to Thelia N'Fyre (446, -7, 267)

That completes this quest and moves you onto the next one