Fragment of the Firelands

Muln tells me that there is a location in the deepest depths of a place called Blackrock Mountain where the barrier between Azeroth and the elemental plane has been damaged, allowing a myriad of elemental creatures from the realm of the Firelands to escape into this reality, including giants as large as an Anchor Pylon!

I'd very much like to study any fragments of material that could be gathered from one of these creatures. Would you brave the Blackrock Depths and recover a sample for me?