Bilming Underground Tunnel Complex

Bilming Underground Tunnel Complex appears in Mistborn.

The Bilming Underground Tunnel Complex emerges in The Lost Metal as a vast, hidden subterranean network beneath the city of Bilming, originally constructed as a covert military project by the Set. Over the course of the novel, the tunnels evolve from a secretive staging ground into a critical battleground that exposes the organization’s plans to weaponize harmonium and threaten Elendel. The complex ultimately becomes the site of a decisive confrontation that dismantles the Set’s operations in the region and forces the survivors to reckon with the broader implications of their technology.