Saturday, March 7, 2026

“Why Iran built ‘Missile Cities’ inside mountains — and why they are so hard to destroy.”

 


Iran’s underground “Missile Cities” are vast military complexes built deep inside mountains to store, prepare, and launch missiles. These facilities are a central part of Iran’s defense strategy and are designed to survive heavy airstrikes and ensure the country can retaliate even after major attacks.

Below is a clear explanation of why Iran built them and why they are difficult to destroy.


1. What “Missile Cities” Actually Are 

“Missile cities” are large underground tunnel networks carved deep into mountains.

They are not just storage bunkers; they function like self-contained military bases.

Inside these complexes you can find:

  • missile storage halls

  • launch preparation areas

  • fuel depots

  • underground rail systems to move missiles

  • command centers

  • power and ventilation systems

  • barracks for personnel

Some facilities are estimated to be hundreds of meters underground, protected by layers of rock and reinforced concrete.

Missiles are transported through tunnels and launched through hidden openings in mountainsides.


2. Built as a Lesson From the Iran–Iraq War

Iran began building these underground systems during the 1980–1988 Iran–Iraq War.

During that war:

  • Iraqi airstrikes heavily bombed Iranian cities and military bases

  • missile sites and airfields were vulnerable to attack

Iran learned a critical military lesson:

Anything visible above ground can be destroyed early in a war.

As a result, Iran began constructing deep underground bases to protect strategic weapons.

Over the next four decades the tunnel network expanded across many provinces.


3. Ensuring “Second-Strike Capability”

The main strategic goal is deterrence.

Even if an enemy destroys Iran’s air force or surface bases, underground missiles could still be launched.

This is called second-strike capability in military strategy.

It sends a message:

  • “Even if you attack us first, we can still strike back.”

That threat is meant to discourage invasion.


4. Mountains Are a Natural Shield 

Mountains provide powerful protection.

Solid rock absorbs and disperses blast energy from bombs.

Typical bunker-buster bombs can penetrate tens of meters of reinforced concrete, but many Iranian tunnels are believed to be hundreds of meters deep inside mountain rock.

This makes direct destruction extremely difficult.

Instead of destroying the whole base, attackers often try to:

  • collapse tunnel entrances

  • block launch points

  • destroy vehicles leaving the tunnels.


5. Complex Tunnel Networks

These facilities are designed with multiple tunnels and compartments.

Key design features include:

  • several entrances and exits

  • branching tunnels

  • separated storage sections

  • blast doors

If one section is destroyed, other parts can continue operating.

This compartmentalization increases survivability during airstrikes.


6. Hidden Launch Points

Missiles are often moved from storage tunnels to camouflaged launch openings.

These launch points can be:

  • hidden in mountainsides

  • disguised as normal terrain

  • covered until the moment of launch

This makes them difficult for satellites or aircraft to detect in advance.


7. Distributed Across the Country

Another reason they are hard to eliminate is distribution.

Iran reportedly has many underground sites across different regions.

Some key areas mentioned by analysts include:

  • western Iran near Kermanshah

  • central regions near Isfahan

  • northern regions such as Semnan

  • coastal areas near the Persian Gulf

Because they are spread across the country, destroying all of them in one strike would be nearly impossible.


8. Why They Still Have Weaknesses

Although they are heavily fortified, missile cities are not invincible.

Recent conflicts show several vulnerabilities.

Key weaknesses include:

1. Known locations
Intelligence agencies have identified many of the sites.

2. Surface infrastructure
Entrances, roads, and launch areas are visible from satellites.

3. Launch timing
Missiles must eventually emerge from tunnels to fire.

Aircraft or drones can strike them at that moment.

4. Entrances can be sealed
Airstrikes can collapse tunnel entrances, trapping missiles underground.

Recent strikes reportedly damaged several facilities and significantly reduced missile launches.


9. Strategic Purpose: Raise the Cost of War

Ultimately, the goal of these underground complexes is not necessarily to win a war outright.

Instead, the strategy is to:

  • make military attacks extremely costly

  • ensure retaliation capability

  • complicate enemy planning

If attackers know they cannot eliminate missile forces quickly, they may hesitate to start a conflict.

This is the core logic behind Iran’s underground missile network.


In simple terms:
Iran built “Missile Cities” to guarantee that even after heavy bombing, missiles could survive underground and still be launched, making any war against Iran far more complicated.

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