Having discovered the corruption in the cave, and having spotted The Kurken, you are now asked to go back in and slay it.
Quest Text Edit
After the crystal storm had subsided, a beast of myth appeared in our village. Brought here by the invading wildkin, this beast, the Kurken, laid waste to our village. Many Stillpine were slain in defense of our lands by this fiend and many have since lost their lives attempting to subdue the beast.
In my visions, I have seen one defeat the Kurken. The one must be you, <name>. You are our only hope. Enter Stillpine Hold and slay the Kurken. Bring me his hide as proof of deed.
<Kurz grunts at you.>
The Promised One has emerged victorious!
The prophecy is nearly complete. Now about that hide...
The Kurken is lurkin' at coordinates 49,12. Enter the cave. Where it forks, go left, and on into the back of the cave where the red crystal is.
On completion of this quest, both and , offered by High Chief Stillpine, become available.