Bilming Underground Caverns

Bilming Underground Caverns appears in Mistborn.

The Bilming Underground Caverns serve as a hidden, labyrinthine network beneath the bustling city of Bilming, first introduced in The Lost Metal. These caverns function as a clandestine hub for the Set's illicit activities, concealing advanced Allomantic and Feruchemical research facilities as well as stockpiles of explosives and weaponry. As the story unfolds, the caverns transform from a mere secret base into the critical battleground where the fate of Scadrial hangs in the balance, forcing key characters to navigate its depths in a desperate race against time.