During the Ashen Dawn, Braelith Cindershout commanded pyrokinetic forces to superheat cliff faces, triggering rapid cooling that formed scoria formations. These brittle volcanic structures were magically reinforced into defensive networks, creating the first Scoria Fortress as a beachhead for Dominion's wildfire campaigns. Subsequent fortresses emerged wherever Dominion forces established prolonged control over volatile rift zones.

The fortress consists of magically-fused scoria rock with porous, vesicular structures that retain volcanic heat for months. Its walls constantly emit toxic fumes and heat haze, creating defensive barriers. Though brittle under direct impact, the structure rapidly self-repairs through magma seepage. Internal chambers maintain furnace-like temperatures lethal to non-Dominion forces.

Serves as Ember Dominion's primary territorial anchor point, enabling rapid deployment of wildfire expansion forces while demoralizing opponents through constant volcanic emissions. Its presence destabilizes surrounding landscapes, creating new fissures for Dominion exploitation.