Jo Grant's Battle Rock (Spiridon)

Used by Jo Grant as an emergency weapon during her escape from Dalek pursuers on Spiridon. The rock's impact left forensic evidence (blood) and was a direct consequence of her sabotage mission.

2 appearances

Purpose

Acts as an improvised hazard during Jo's attempt to disable the Daleks' explosives—this particular specimen gains lethal kinetic energy when dislodged from the cliff, creating an unexpected obstacle to both humans and Daleks during the crisis.

Significance

The rock becomes the weapon that turns Jo's act of rebellion into immediate peril, tipping the balance from tactical success to personal crisis. Its accidental strike crystallizes the cost of resistance against the Daleks' overwhelming force, embedding a moment of brutal consequence in the narrative's otherwise technical sabotage sequence.

Appearances in the Narrative

When this object appears and how it's used

2 moments

S10E18 · Planet of the Daleks Part 4

Daleks reveal jungle explosives trap

A heavy, irregular rock falls from the cliff face due to Jamaican instability and Dalek excavation. It strikes Jo’s temple, rendering her unconscious and halting her sabotage effort, while its descent emphasizes the precarious balance of the terrain.

Before: Wedged in unstable strata of the cliff face near the explosives

After: Fallen and blood-smeared on one side, embedding into the cliff’s base near Jo’s unconscious body

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S10E18 · Planet of the Daleks Part 4

Jo sabotages Dalek explosives under cliff fall

A jagged piece of basalt breaks loose from the unstable cliff ledge during the Daleks’ excavation and falls directly onto Jo’s head as she works. Its fresh blood smear marks the moment her consciousness is extinguished.

Before: Embedded in the cliff face, partially loosened by Dalek movements.

After: Stained with Jo’s blood, lodged near her unconscious body atop the explosives.

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