Thunder Bluff is the Tauren capital city located in the northern part of the region of Mulgore on the continent of Kalimdor. The whole of the city is built on bluffs several hundred feet above the surrounding landscape, and is accessible by elevators on the southwestern and northeastern sides.

Thunder Bluff is located in the far north of Mulgore, among the sprawling flatlands of the Golden Plains. Due to its height, the air around Thunder Bluff is thinner than at ground level, but not to the point of being uncomfortable. Mount Hyjal (some might call it Mt Doom..) for example is much, much worse. The weather is almost always warm and sunny, with intermittent breezes carried in from the Barrens.
The views of the Golden Plains here are excellent. Although its quite a hike up here, the area is suitable for dwarves. Probably at least level 6 or 7 dwarves though.
Keep an eye out for hordes coming past on the track.