Mysterious Red Crystal
From WoWWiki
The Mysterious Red Crystal is located in the Darkshore. [47.3, 48.7] Hostile moonkin are being drawn to it. It seems that embedded inside the crystal are a few small fragments of bone, as well as half of a jawbone of what may be a humanoid.
Quests
[14] As Water Cascades 
- [14] The Fragments Within
Origin
| This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.
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The model file of the crystal mentions Illidan.
With the Burning Crusade expansion the mystery of this red crystal seems to have been revealed. This red crystal is most likely a piece of the Exodar. This mean Blizzard created the draenei storyline far before TBC was announced.
