Wyvern Cliffs

Even to those that have no knowledge of events that gave the Wyvern Cliffs their name, it is perhaps unsurprising to any who learn that there was indeed a Wyvern involved and, yes, there was a slaughter. When one delves a little deeper into the history of that sorry event, it all came about when a sneaky Goblin, Furgit Gutslasha, tried to impress his Orc overlord by climbing Iron Rock and make off with a Wyvern hatchling to rpesent as a gift to his master. Suffice to say that the maternally outraged mother was not impressed, and proceeded to annihilate the entire greenskin tribe. Ironically, it is rumoured that only Furgit himself escaped the ensuing massacre. The escaped Wyverns have roosted in the cliffs ever since.

Source
Blood in the Badlands

pg. 11