Speak with Th'las Wildwood ( -106, -12, -42 ) Copy/waypoint -106, -12, -42 in The Lesser Faydark. He will send you to kill Ironwood the Cruel (60^^^ Heroic) to the North and he will spawn as you approach ( -62, -16, -278 ) Copy/waypoint -62, -16, -278. Kill him to obtain a void crystal fragment.
Bring the fragment to Rooleean Felodaan to complete the quest and receive the next quest in the series.