Alcarnus was established c. 885, when ore was discovered in the Stinging Winds. Alcarnus was established as the center of mining in the area, with several other smaller settlements springing up in its wake.
During the rule of Emperor Hakan II, its population was massacred by the Dark Coven. Some refugees managed to escape to the imperial capital of Caldeum. Later, the Nephalem arrived and rid the town of the Coven, along with rescuing surviving prisoners of the cult.