You have faced the Lightwarden of the Rak'tika Greatwood, and are left to ponder the revelation that followed.
This quest is available if you have completed the quest The Burden of Knowledge.
Starting the Quest
Talk to Y'shtola in the Rak'tika Greatwood to begin the quest.
Speak with Almet
You can either teleport to Fanow, or you can go southwest to where the orange arrow is pointing in the minimap. Talk to Almet to proceed. There will be a cutscene.
Speak with Runar
You can either teleport to Slitherbough or you can go southwest to where the orange arrow is pointing in the minimap. Go to the quest icon and talk to Runar to complete the quest. There will be a cutscene.
Next Main Scenario Quest
After you complete the quest, you will need to be at least level 76 to proceed to the next quest. After you reach level 76, talk to Y'shtola to accept the next quest: Out of the Wood.