Fabula
Location
Location
Subsea Research and Military Facility

Sea Base Four (Main Facility)

Comprehensive subsea facility serving as command center and primary operations hub
18 events
18 rich involvements
2 sub-locations

Sub-Locations

Detailed Involvements

Events with rich location context

S21E1 · Warriors of the Deep Part 1
Forced entry into underwater military base

The bulkhead door serves as the threshold between the unknown exterior of Sea Base Four and its treacherous interior. As the primary point of physical conflict and resistance, it forces the companions to confront the base’s militarized nature. Its groaning resistance and eventual yield mark the moment the Doctor and companions transition from explorers to intruders in a hostile domain.

Atmosphere

Oppressive with a sense of hidden lethality, the atmosphere thickens with the realization of the facility’s true purpose

Functional Role

Physical barrier representing both entry point and security challenge

Symbolic Significance

Represents the facade of safety and routine in the face of overwhelming military threat

Access Restrictions

Restricted to authorized personnel only, designed to repel or slow unauthorized entry

The door’s metal surface is cold, resistant, and groans under pressure Fluorescent lighting flickers from corrosion and stress
S21E1 · Warriors of the Deep Part 1
Doctor recognizes Sea Base Four

The Bulkhead Door to Sea Base Four serves as the threshold between ignorance and grim revelation. As the companions interact with the door, the location's true purpose—a militarized installation bristling with lethal weapons—becomes apparent, marking a critical shift in their understanding of their environment.

Atmosphere

Tense and enigmatic with an underlying mechanical urgency, the door's resistance to movement heightening the companions' growing awareness of escalating stakes.

Functional Role

Gateway to the base's destructive capabilities, a barrier forcing engagement with hidden truth.

Symbolic Significance

Represents the illusion of safety giving way to the reality of hidden menace beneath the surface.

Access Restrictions

Controlled environment with restricted access based on security protocols, initially resisting entry.

Heavy metal door resistant to initial opening Groaning metal underscoring the base's utilitarian and high-stakes nature
S21E3 · Warriors of the Deep Part 3
Doctor and Tegan move to intercept Myrka threat

Sea Base Four embodies the institutional hub whose integrity trembles under siege. Its sprawling subsea corridors reverberate with the Myrka’s carnage, while its command axis remains partly intact, hosting the Doctor’s targeted audience with Vorshak and thus shaping his strategic pivot.

Atmosphere

Groaning metal and saline taint with splinters of crimson warning light

Functional Role

Centralized crisis nexus and moral decision center

Symbolic Significance

Human science stretched across an alien void

Access Restrictions

Restricted to base staff and distinguished visitors

Low thrum of reactor overload Scent of ozone seeping from ruptured conduits
S21E3 · Warriors of the Deep Part 3
Solow and Nilson plan escape as Myrka rampages

Sea Base Four is a sprawling facility groaning under tectonic pressures and the Myrka’s rampage, its corridors slick with condensation and emergency lighting. The base’s infrastructure is collapsing, with bulkheads trembling under the creature’s methodical hunt for the bridge. The environment reflects the broader fate of the base and its inhabitants, all at the mercy of escalating chaos.

Atmosphere

A pressurized, oppressive darkness where the constant groan of metal and shriek of alarms blend into a symphony of impending doom

Functional Role

Battleground and deathtrap, where human efforts to survive collide with unstoppable aquatic forces

Symbolic Significance

Embodying the futile struggle against overwhelming natural and artificial threats to order and life

Access Restrictions

Restricted to essential personnel only, with corridors rapidly becoming death traps

Reinforced hull groaning in harmonic resonance with plate movements Power flickers intermittently, casting jagged shadows across tactical displays
S21E3 · Warriors of the Deep Part 3
Silurian orders Myrka to advance

The Silurian Base’s grimy corridors reverberate with the echo of Tarpok’s report, the bulkhead door’s breach already feeding saltwater into the vents and casting the command spaces into shadowed urgency. Every cubic meter of corridor becomes a conduit for the Myrka’s electrified slaughter, while the bridge sits vulnerable as the creature’s programmed objective.

Atmosphere

Tense and metallic under emergency lighting

Functional Role

Command outpost in which tactical data becomes artillery

Symbolic Significance

Represents humanity’s tenuous foothold in a contested oceanic trench

Emergency lighting tinged crimson Muted alarms from overloaded systems
S21E3 · Warriors of the Deep Part 3
Doctor and Preston set Myrka trap

Sea Base Four functions as the confined battleground where technological and biological crises collide, its labyrinthine corridors and failing systems amplifying every threat. The base’s compromised infrastructure and desperate crew create an atmosphere of entropy that only the Doctor’s quick thinking can momentarily counter.

Atmosphere

A clangorous, metallic purgatory of alarms and emergency lighting, where the air tastes of brine and scorched circuitry, filled with the cacophony of crisis and the groaning resistance of aged infrastructure

Functional Role

Active warzone and sanctuary, a pressure-cooked crucible of tactical improvisation and institutional collapse

Symbolic Significance

Embodying the thin line between survival and annihilation under the sea, where human hubris meets indifferent cosmic forces

Access Restrictions

Zone-based access controls failing under assault, rendering entire sectors isolated or overrun

Flickering emergency lighting casting jagged shadows across wet metal surfaces Persistent scent of saltwater infiltration and ozone from failing electrical systems
S21E3 · Warriors of the Deep Part 3
Doctor diagnoses Myrka's fatal weakness

Sea Base becomes an active pressure cooker of desperation, its metallic skeleton singing with tectonic stress while the Doctor’s revelation ricochets among exhausted personnel. The station’s failing systems inject a visceral countdown into their dialogue, each groan of metal a reminder that the Myrka’s approach is outpacing their options.

Atmosphere

Clammy tension thickened by brine and ozone, shot through with the hum of alarms and distant hydraulic screams

Functional Role

Stage for fragile negotiation under duress, where geography and infrastructure amplify mortal stakes

Symbolic Significance

Represents human ingenuity stretched to its breaking point by forces beyond its understanding

Access Restrictions

Apparently open during this crisis, though hierarchy and protocol govern the listeners’ reactions

Emergency lighting casting crimson shadows across corroded bulkheads Distant metallic groans synchronizing with tectonic activity
S21E3 · Warriors of the Deep Part 3
Doctor’s UV converter test succeeds as Solow dies

Sea Base Four serves as the claustrophobic battleground where Doctor Solow’s desperate flight and the Myrka’s merciless enforcement unfold. The base’s cramped corridors and emergency lighting amplify the sense of doomed inevitability, while the Myrka’s presence underscores the futility of escape.

Atmosphere

Frantic and desperate, with a sense of impending doom

Functional Role

Battleground and conduit for the crisis

Symbolic Significance

Represents institutional decay and the failure of human and Silurian ambitions

Access Restrictions

Corridors patrolled by guards but with no effective barriers against the Myrka

Emergency lighting casting jagged shadows Clammy metallic corridors echoing with alarms
S21E3 · Warriors of the Deep Part 3
Guards discover Solow's lifeless body

The grim corridors of Sea Base Four twist between command centers and escape pods, their walls slick with condensation and emergency lighting casting crimson glows over clamoring alarms. Here, Doctor Solow’s flight meets the Myrka’s inescapable path, turning a routine corridor into a death trap where technological failure and biological terror intersect.

Atmosphere

Desperate, echoing with distant wails and punctuated by Solow’s frantic footsteps before the Myrka’s charge

Functional Role

Primary route of flight and pursuit, converting a navigational path into a battlefield of chance and consequences

Symbolic Significance

Embodies institutional fragility—where human plans crumble against alien might

Emergency lighting cast in crimson Distant bulkhead alarms wailing like dying whales
S21E3 · Warriors of the Deep Part 3
Doctor organizes defense under siege

Sea Base Four heaves under the Myrka’s assault, its bulkheads shaking and power flickering in sympathy with the creeping dread. The command center vibrates with urgency as alarms wail and guards sprint through corridors slick with brine and ozone. Here, decisive command dictates whether the base survives or collapses into the abyss.

Atmosphere

Tense with metallic dread and urgent activity

Functional Role

Command center orchestrating desperate defense

Symbolic Significance

Represents human fragility against overwhelming alien forces

Access Restrictions

Restricted to senior personnel during crisis

Emergency lighting cast in crimson hues Metallic groaning of stressed bulkheads
S21E3 · Warriors of the Deep Part 3
Guards report Myrka and Solow’s death

The pressurizing corridors of Sea Base Four transform into a nerve center of cascading disaster as critical intelligence from the guard and Bulic's communicator collapse the base's operational integrity, rendering its vast systems vulnerable to coordinated alien assault while simultaneously concentrating all authority figures within immediate proximity.

Atmosphere

Tension-filled chaos with metallic groans of failing systems and staticky hormonal communication, compounded by Bulic's breathless breach report and the physical transfer of grim evidence through desperate messengers.

Functional Role

Battleground nerve center where crisis intelligence consolidates and authority fractures under compounding breaches of containment and security

Symbolic Significance

Represents institutional hubris collapsing under the weight of unanticipated threats from within and without the human-controlled environment

Access Restrictions

Restricted to operational personnel and authorized command staff during crisis protocols when system integrity is compromised

metallic groaning bulkheads under tectonic pressure clipped urgency of military communication intermixed with static
S21E3 · Warriors of the Deep Part 3
UV device neutralizes Myrka Silurians strike back

The Sea Base Four acts as the stage for this critical escalation, with the corridor’s battle feeding directly into the base’s wider survival crisis. The base trembles under the combined assault of the Myrka and reanimated Sea Devils, its systems strained as the Doctor’s tactical victory triggers Silurian reinvention of strategy.

Atmosphere

Panicked and strained, with bulkhead alarms wailing and emergency systems straining under multiple simultaneous threats

Functional Role

Centralized command and survival hub under siege

Symbolic Significance

Embodiment of human technological precarity in the face of ancient alien revivals

Distant bulkhead alarms wailing Power flickering intermittently across critical systems
S21E3 · Warriors of the Deep Part 3
Sea Devils corner Turlough and Bulic

Sea Base Four collapses into a distorted metal labyrinth where emergency lighting paints every bulkhead in blood-red hues. The structure itself becomes the weapon—twisting corridors force Turlough and Bulic into the narrowing kill zone while the cramped space amplifies the lethal converging fire of Sea Devil weapons.

Atmosphere

Claustrophobic dread amplified by groaning metal, ricocheting projectiles, and the acrid tang of burnt wiring

Functional Role

deadly killing zone where human mobility is strangled and panic supplants order

Symbolic Significance

embodiment of brittle human control shattered by ancient forces

Access Restrictions

limited to personnel and Sea Devil warriors under explicit maneuver orders

emergency lighting cast in crimson like arterial blood bulkhead alarms from failing systems blend with weapon discharges
S21E3 · Warriors of the Deep Part 3
Silurians march on Sea Base bridge

The sprawling Sea Base itself trembles under the dual threats of alien incursion and the Myrka’s rampage, its entire infrastructure groaning under the weight of simultaneous assault from without and within. Every corridor, bulkhead, and chamber now exists under the shadow of impending conquest.

Atmosphere

Groaning under structural and moral strain

Functional Role

Contested military and research facility

Symbolic Significance

Symbolizes humanity’s fragile dominion over the deep, now under existential siege

Access Restrictions

Limited to personnel resisting invaders

Bulkhead alarms wailing in harmonic dissonance Power flickering like a dying heartbeat
S21E4 · Warriors of the Deep Part 4
Doctor greets old enemy Sauvix on sea base

The dimly lit corridor of Sea Base Four becomes a stage for diplomatic experimentation under impossible conditions — fluorescent lighting casting sterile hues over durasteel walls, the facility’s failing life support systems humming in the background as humanity is marched toward an uncertain fate.

Atmosphere

Cautiously pressurized tension, where forced calm brushes against imminent violence

Functional Role

Stage for human vulnerability — a corridor designed for service now serving as battlefield control point

Symbolic Significance

Represents the fragility of human refuge in the crushing depths of the alien world

Access Restrictions

Strictly controlled military circulation zone under Silurian enforcement

Harsh fluorescent lighting with salt corrosion streaks Pulsing atmospheric hum from failing life support
S21E4 · Warriors of the Deep Part 4
Turlough and Preston scan the wreckage after battle

Sea Base Four serves as the fractured and besieged backdrop where the remnants of humanity’s subsea fortress echo with the violence of war. Its corridors still hum with tension, though ventilation systems may falter under the strain of sudden attacks and emergency protocols. The confined space amplifies both physical danger and moral urgency.

Atmosphere

Hushed yet charged with residual violence, the atmosphere thick with the weight of imminent decisions under duress.

Functional Role

Battleground-turned-decisive-crossroads where survival and morality collide

Symbolic Significance

Represents humanity’s fragile foothold in a hostile environment, where safety and ethics are both under siege.

Access Restrictions

Restricted to authorized personnel only, though compromised by ongoing assault and damage control operations.

distant weapons fire audible through bulkheads emergency lighting casting stark, utilitarian glows
S21E4 · Warriors of the Deep Part 4
Team assembles for urgent mission

The Sea Base serves as the pressurized crucible where humanity’s organized resistance collides with the Silurian assault under crushing abyssal depths. Its corridors, dimly illuminated and functional, witness the convergence of erstwhile enemies transformed by mutual peril into reluctant collaborators.

Atmosphere

Urgent, fluorescent-lit tension beneath crushing oceanic pressure

Functional Role

Convergence point for crisis-driven coalition

Symbolic Significance

Humanity’s fragility and unity under existential threat

Access Restrictions

Currently uncontrolled due to system failures and alien incursion

Fluorescent lighting casting sterile glows over utilitarian corridors Thick durasteel hull absorbing ceaseless abyssal pressure
S21E4 · Warriors of the Deep Part 4
Doctor realizes hexachromite gas works

Sea Base Four’s crew barracks becomes the testing ground for the Doctor’s chemical intervention, its confined space amplifying the gas’s rapid effect. The durasteel bulkheads and sterile lighting frame the sudden, wordless collapse of reptilian lifeforms.

Atmosphere

Tense and sterile with an undercurrent of impending violence

Functional Role

Confinement and exposure zone for rapid lethal demonstration

Symbolic Significance

Represents the fragile boundary between engineered order and biological chaos

Access Restrictions

Restricted to authorized personnel and Silurian guards

Fluorescent lighting casting harsh glare over fallen Sea Devils Stifling recycled air carrying the faint scent of ozone

Events at This Location

Everything that happens here

18
S21E1 · Warriors of the Deep Part 1
Doctor recognizes Sea Base Four

Tegan stumbles upon an inexplicable noise while the Doctor examines a sign on the bulkhead door. He recognizes the location not as a mere research station but as Sea Base …

S21E1 · Warriors of the Deep Part 1
Forced entry into underwater military base

The Doctor and his companions reach Sea Base Four, a top-secret underwater military installation bristling with proton missiles. After the Doctor identifies the facility’s purpose and threats, Tegan slides open …

S21E3 · Warriors of the Deep Part 3
Doctor and Tegan move to intercept Myrka threat

Tegan confronts the Doctor about the Myrka’s ability to break into the base, pressing him for a defensive strategy as guards rush past toward Airlock One. The Doctor remains outwardly …

S21E3 · Warriors of the Deep Part 3
Solow and Nilson plan escape as Myrka rampages

The bridge's fragile calm shatters as Solow reports disposing of a body and arming an escape pod during the Myrka's electrified rampage. Nilson coldly approves the plan amid personnel casualties, …

S21E3 · Warriors of the Deep Part 3
Silurian orders Myrka to advance

Tarpok reports the Myrka’s breach of a bulkhead door to Ich Tar, who immediately seizes command authority. The Silurian leader issues a terse but devastating order to drive the creature …

S21E3 · Warriors of the Deep Part 3
Doctor and Preston set Myrka trap

With the Myrka closing in on the Sea Base’s bridge, the Doctor recognizes its likely target and pivots to devising a way to slow its advance. He seizes on Preston’s …

S21E3 · Warriors of the Deep Part 3
Doctor diagnoses Myrka's fatal weakness

The Doctor identifies ultraviolet light as the Myrka's fatal vulnerability, leveraging his understanding of the creature's deep-sea origins and Silurian modifications. Preston's skepticism forces him to defend both his scientific …

S21E3 · Warriors of the Deep Part 3
Doctor’s UV converter test succeeds as Solow dies

With the Myrka edging closer to the Sea Base bridge, the Doctor tests the UV converter device and confirms it can neutralize the creature. Yet in the same frantic moments, …

S21E3 · Warriors of the Deep Part 3
Guards discover Solow's lifeless body

In the chaos of the Myrka’s rampage through the Sea Base, Doctor Solow flees from the Doctor’s upheld plan only to stumble directly into the creature’s path. Unarmed and desperate, …

S21E3 · Warriors of the Deep Part 3
Doctor organizes defense under siege

With Turlough absent and the Myrka’s breach confirmed, the Doctor hastily finalizes a defensive strategy while Commander Vorshak reluctantly accepts his guidance. The discovery of Solow’s corpse and the Myrka’s …

S21E3 · Warriors of the Deep Part 3
Guards report Myrka and Solow’s death

The guards storm into the Sea Base with urgent news, presenting two grim discoveries just as Vorshak is preparing to execute the Doctor’s defensive strategy. A disc found on Doctor …

S21E3 · Warriors of the Deep Part 3
UV device neutralizes Myrka Silurians strike back

The Doctor and Tegan deploy the experimental UV device to exterminate the Myrka, achieving a brief tactical victory that briefly secures the bridge. The creature's sudden elimination triggers a rapid …

S21E3 · Warriors of the Deep Part 3
Sea Devils corner Turlough and Bulic

The Sea Base fractures under simultaneous assaults by the Myrka, Silurians, and Sea Devils, becoming a killing ground where human order dissolves. Sauvix seizes on the chaos to split the …

S21E3 · Warriors of the Deep Part 3
Silurians march on Sea Base bridge

Sauvix leads his Silurian warriors forward after reporting the path clear. Their advance toward the Sea Base bridge signals a direct challenge to the Doctor’s attempt to stop the Myrka …

S21E4 · Warriors of the Deep Part 4
Doctor greets old enemy Sauvix on sea base

The Doctor and Tegan are taken captive by the Silurian Sauvix on the sea base. As they are forced forward, the Doctor pauses to address Sauvix with a formal greeting, …

S21E4 · Warriors of the Deep Part 4
Turlough and Preston scan the wreckage after battle

In the chaos of the Sea Base after the Silurian and Sea Devil assault, Turlough and Preston assess the dire circumstances. The distant sounds of conflict stir tension as the …

S21E4 · Warriors of the Deep Part 4
Team assembles for urgent mission

Under mounting pressure from the Silurians’ advancing missile launch sequence, the Doctor reunites with Tegan and Turlough at the sea base. Despite earlier fractures and individual allegiances, the shared threat …

S21E4 · Warriors of the Deep Part 4
Doctor realizes hexachromite gas works

The Doctor and his companions observe Sea Devils collapsing near a ventilation grill after hexachromite gas deployment. The immediate lethality to the reptilian lifeforms confirms the weapon’s devastating efficiency and …