The Exiles of Ulduar

This breadcrumb is offered by Brann after completing Norgannon's Shell.

Objectives
Speak with Bouldercrag the Rockshaper at Bouldercrag's Refuge.

Description
The Storm Peaks are an intriguing place, but there's far more here than titan ruins. The peoples who live here face a dire threat in Loken and his minions.

He sent his favorite servants, the iron dwarves, on a brutal campaign against all the creatures of stone. He expelled the earthen from Ulduar, forcing them to take shelter at Bouldercrag's Refuge, on the face of a mountain west of the Inventor's Library. Bouldercrag and his brethren are beset by the iron dwarves there. Find and help them,.

Completion
So you know Brann Bronzebeard, then? He is our closest ally among those of the flesh. We are as brothers in the struggle against Loken and his followers, in the struggle for Ulduar.