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.

Northeron is the name of a location where some of the Wildhammer dwarves lived.^{DotD 123} Some of the Dwarves in the Second War came from Northeron. Northeron was known for its mysterious ironwood tree forests, the torrential storms from its frozen mountains, ominous and foreboding peaks,^{W2BnetMan 46, 51-52} and jagged ice cliffs.^{DotD 123} It is said that a gryphon aviary was hewn from solid rock by the dwarves of Northeron.^{W2BnetMan 55} The feral Dwarves of the Northeron wildlands offered their service of their Gryphon Riders to assist in the decimation of the foul Orcs that had desecrated their homeland and slain the leader of the Alliance forces, Lothar.(WC2) Chief Thane Kurdran Wildhammer of Northeron was the most famous of these Gryphon Riders.

It appears to be a separate realm from that of the Aerie Peaks region as both locations are mentioned in Day of the Dragon, it also appears to have nothing to do with Northrend, which is also mentioned separately in the book.^{DotD 144} Hinterlands existed at the time as well.^{ToD 161}

Speculation

This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore!

In early sketches of Azeroth, Northeron appeared to be within Quel'Thalas, north of the eastern Lordaeron (Eastern Plaguelands), north of where Hinterlands is located. Its still possible that Northeron may possibly be subzone within the Aerie Peaks or The Hinterlands, or its unfinished zone of northern Lordaeron. Northeron may be short for northern Lordaeron.