TheWoWDBeasiest way to complete this is to go due South to around 57.4 67.4(as mapped) and kill the Broodlord Ixkor. He spawns a couple of minutes after you kill the 6 or so spiders in the area.
Quest
Unknowable Power
A World of Warcraft quest in Tanaan Jungle. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
Don't know what they're talking about here, but the spiders simply respawn and nothing appears at 57.4 - 67.4
SPwnt over an hour there... Blizzard S.U.C.K.S. ! BS quests.
You got lucky. He spawns on a timer.
Quest facts
Quest ID39432
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(39432))
Description
The one they call Gul'dan has ruined his own people, and now seeks to ruin what remains of mine as well. The fallen outcasts at Kra'nak have already pledged themselves to Gul'dan in a false promise of a return to the skies. He has given the most powerful of his minions the power of the Apexis, but twisted in a way that I cannot explain. Bring one of these fragments to me.
Community notes from Wowhead · 10 comments
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Apexis Crystalx 1,500
Reward details
Reputation: Order of the Awakened +1,500
Survivors of a grisly civil war, these beleaguered arakkoans hope the reclamation of apexis artifacts will hold the key to peacefully rebuilding their civilization.
Reputation group: Warlords of Draenor.
Other quests in Tanaan Jungle that reward Order of the Awakened reputation: Unseen Influence (+1,500).
Currency: Apexis Crystal x 1,500
The enduring legacy of a lost civilization, Apexis crystals contain untold reserves of magical power.
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.