Fabula
Object
Object

Tunnel Grating

A cramped metal barrier with diamond-shaped openings, forming both obstacle and access point in a narrow ventilation shaft. Its corroded edges show wear from repeated use, and its frame barely accommodates K9’s rounded shape. The Doctor narrowly fits behind it, using its cover to evade detection while listening to K9’s urgent message about Romana’s captivity.
2 appearances

Appearances in the Narrative

When this object appears and how it's used

2 moments
S16E25 · The Armageddon Factor Part 5
Doctor caught in rescue trap

The metal tunnel grating serves as both cover and obstacle, used by the Doctor to tap K9 into proximity for communication. He then physically strikes the grating to clear it, using brute force to reshape the immediate environment in service of rapid communication.

Before: Fixed metal barrier blocking passage between the tunnel and an adjacent chamber.
After: Knocked aside by the Doctor’s force, opening temporary access to Drax’s cell.
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S16E25 · The Armageddon Factor Part 5
Doctor forces Drax to free Astra

The Tunnel Grating serves as a vital access point and acoustic conduit between the Doctor and K9, allowing the transmission of a life-and-death message across compact space. The grating is used physically when the Doctor hits it to bring K9 closer and later serves as a visually compressed barrier between two crisis zones—the tunnel and Drax’s cell. Its cramped nature magnifies every action.

Before: Closed ventilation grill obstructing sound and movement between tunnel and cell
After: Partially opened by the Doctor, enabling physical passage of K9 into Drax’s cell
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