Alther's Mill is an abandoned lumber mill located northeast of Lakeshire in the Redridge Mountains region of human lands.
This is a small area overrun by spiders, buzzards and the occasional stray orc. Most folks pass through on the way to Stonewatch Keep.
Most Alliance rogues know it well, as the mill is where they get their thieving certificate and an excellent place to practice lockpicking.
This section concerns content exclusive to Cataclysm.
The mill has been taken over by Blackrock Clan orcs who also have a very large worg pen. It doesn't appear that the chests for lockpicking are here any longer.
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.
Alther's Mill may have been the area where the human encampment was located at in The Red Ridge Mountains.