This quest is not available in game.
Bring Frostmaw's Mane to Melor Stonehoof in Thunder Bluff.
<name>, it is now time for you to travel to far-off lands. You are ready.
You now hunt Frostmaw, a yeti in the Alterac Mountains. He is elusive, his white coat blending into the snows of his mountain home. He rarely shows himself.
But I will show you how to entice a creature such as he. Here, take this scroll. On it I have written how Frostmaw may be lured.
Now go, <name>. Your journey is long and many challenges lay waiting. When you return with Frostmaw's mane, only then is your task complete.