Tunnel Ventilation Fan (Drathro's Fortress)

Large mechanical fan embedded in the tunnel wall of Drathro's automated fortress, stained by tunnel grime and lubricant.

2 appearances

Appearances in the Narrative

When this object appears and how it's used

2 moments

S23E4 · The Mysterious Planet Part 4

Doctor desperate to shut down lights

The tunnel ventilation fan begins rotating forward with grinding precision, amplifying ambient noise and drawing air forcefully through the tunnel. Its mechanical rhythm accelerates as hazards intensify, becoming a sonic and physical hazard that complicates rescue attempts and underscores the chamber’s lethal design. The fan’s unstoppable operation symbolizes the system’s disregard for individual survival.

Before: Stationary, part of standard ventilation infrastructure

After: Operational at heightened speed, generating hazardous airflow and noise

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S23E4 · The Mysterious Planet Part 4

Drathro abandons the Doctor for Merdeen's intrusion

The large ventilation fan embedded in the tunnel wall begins rotating forward with grinding mechanical precision, amplifying ambient noise and thrashing air into the chamber. Its roaring presence drowns out dialogue and forces the Doctor to scramble toward the central power hub to cease its operation.

Before: Stationary during initial confrontation, part of routine environmental regulation

After: Actively operational, producing dangerous airflow that threatens balance and hearing

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