This quest is not available in game.
Return to Thunder Bluff and speak with Turak Runetotem on the Elder Rise.
The time has come for us to part ways, young one, as the application of your lessons takes you back to whom that sent you to me. Though the tauren are thought to be young in the ways of Cenarius, Turak Runetotem walks with much balance in the presence of nature. Listen to his instructions, and you will soon complete your first lessons into your role as a protector of balance.
Go now, young one. We shall meet again.