This quest is not available in game.
Bring the Ancient Egg to Yeh'kinya in Tanaris.
The Prophecy of Mosh'aru speaks of an ancient egg. It is a relic of a time when trolls ruled vast empires, and it has the power to hold the essence of Hakkar. It may be the only way to keep our world safe from his evil.
Bring me the ancient egg, <name>. It is said to lay hidden deep within Jintha'Alor in the Hinterlands, in a cave behind the amphitheater at the top of the city.