The Lone Mountain
Speak to Warbrave Oro at Krasus' Landing in Dalaran.
Our sources tell us that a Highmountain tauren emissary has recently arrived in Dalaran. We don't know his intentions, but his people could be an invaluable contact in the region.
Khadgar is greeting the emissary at Krasus' Landing in Dalaran - you should seek him out.