The Treasury Chamber was a large room in the center of the Heartrock of Sanctaphrax, where stormphrax was stored. In the absolute darkness of the treasury, the stormphrax became immensely heavy--heavy enough to anchor down the Sanctaphrax rock, preventing it from breaking its moorings and drifting off into Open Sky forever.


The Treasury Chamber originally functioned as the Earth-Scholars' Great Laboratory, until the Sky-Scholars cast them out of Sanctaphrax during the Great Purges.

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