Slagmaw is the largest of the Mirran refugee camps, situated near the Great Furnace. A place at this camp is coveted because it's thought to be the safest because it's the most distant from the other lacunae (through which Phyrexians pass regularly). It gets its grim name from the fact that it is situated inside a large, dead creature that was once a "living furnace"—a husk that the Phyrexians tellingly don't reprocess. Because of its substantial shelter from the surrounding environs, this camp is much better outfitted and protected than the others.