Blackrock Spire Foothills

The orcs have built several encampments at the foot of the volcano, claiming the mountain as their own (but refusing, I noticed, to explore the depths of it). They have hidden much of their settlements in the foothills, making sure that someone will not simply happen upon them. They can see people approaching for miles. Although the orcs outnumber the ogres, they are still bothered by ogre attacks as they also fend off hunting parties from Stormwind sent to eradicate the Horde from Azeroth. There is an angry, desperate sense about this place.

Speculation
This is possibly where the Blackrock Stronghold has been built. It seems more like the Pillar of Ash, but that is much farther away from Blackrock Spire.