The Last of Us Codexery

The Underground Tunnels

A shadowed labyrinth beneath the ruins where silence is life and darkness hides deadly stalker.

The Underground Tunnels refer to a network of subterranean passageways, primarily located beneath the city of Salt Lake City and other major urban centers in The Last of Us universe. Originally constructed as maintenance corridors, subway lines, or storm drains, these claustrophobic spaces became critical arteries for survival after the Cordyceps outbreak decimated surface populations. For groups like the Fireflies and later independent survivors, the tunnels offered a hidden route to bypass heavily fortified quarantine zones and avoid the hordes of Infected roaming above ground.

Primary Location
Salt Lake City (and other major cities)
Original Purpose
Subway transit and municipal maintenance
Key Users
Fireflies, Joel, Ellie, Survivors
Infection Status
Heavily infested with Clickers and Bloaters
Strategic Value
High (Stealth movement, bypassing QZs)
Lighting Condition
Dark, relying on flashlights or emergency strips

Lore & Background

The tunnels played a pivotal role in the journey of Joel and Ellie as they attempted to escape Salt Lake City. These subterranean networks were often controlled or monitored by hostile factions like the Fireflies, who utilized them for covert operations against the military quarantine zones. The architecture of these spaces—cramped, damp, and filled with rusted debris—became a defining element of the series' tension, emphasizing the fragility of human life in a world reclaimed by nature and fungus.

In Their Own Story

The air down here is thick with the smell of wet rot and old copper. Joel holds his breath, pressing Ellie's hand against her chest to stop her from moving. A low, rhythmic clicking echoes from the darkness ahead, bouncing off the curved concrete walls like a heartbeat. They inch forward over a pile of rusted rebar, the flashlight beam cutting through the gloom to reveal a Bloaters' shell discarded near a collapsed turnstile. In this world, the ground beneath your feet is often more dangerous than the sky above.

Reader's Guide

Geographically, these tunnels are a chaotic mix of subway platforms, maintenance shafts, and drainage systems that weave beneath the city's grid. By 2013, they served as the primary escape route from Salt Lake City, forcing survivors to navigate pitch-black environments filled with Clickers who hunt by sound. The infection status is critical; these enclosed spaces are hotbeds for Infected activity due to the lack of sunlight and fresh air. Bloaters often block choke points, while runners and clickers patrol the periphery. Strategic importance lies in their ability to bypass surface checkpoints, making them essential for smuggling or escape. Between 2013 and 2023, the tunnels likely saw increased structural decay as maintenance ceased entirely. While the core layout remains similar, the fungal growth has probably expanded further into the deeper levels, creating even more hazardous environments for any modern travelers attempting to use these ancient paths.

Did You Know?

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