Brokenrock Mountains

From WoWWiki

This article contains lore taken from Warcraft II: Tides of Darkness, Warcraft II: Beyond the Dark Portal, the manuals, and official bonus maps.

The Brokenrock Mountains was a set of mountains in Draenor valued by the Orc chieftains during the Second War in the official Blizzard bonus map for Warcraft II called "Mountain Pass". They were valued for their high amounts of gold ore.

Towering over the fetid swamps of Draenor, the Brokenrock Mountains have long been a vital source of gold. The precious metal, sought after by the Orcish clans to fuel their rampaging war machines, has always been a prize worth fighting for. While an age old pact between the clans grants members of the Horde equal access to the vast riches of the mines, clan chieftains occasionally attempt to seize control of the entire mountain range for themselves. These greed-driven leaders learn all too soon that the "specialized mining techniques" of the Goblin Sappers has made the mountain passes very difficult to hold...

The Brokenrock Mountains were presumably destroyed when the Dark Portal collapsed and tore through Draenor. They are not featured in the Burning Crusade expansion, supporting this assumption.