Iran has sealed all tunnel entrances at its nuclear complex in Isfahan.

Satellite images taken over Iran reveal activity that is difficult to dismiss as routine construction. At the Isfahan nuclear complex, all entrances to underground tunnels have been filled with earth—just as was done before Operation Midnight Hammer.

In Natanz, construction of a protective roof over the plant began as early as December 2025, and the work was completed in a tight timeframe—by the end of the month. A similar shelter in Isfahan was installed by early January 2026, and not just anywhere, but at the northeastern corner of the facility, in a potential airstrike risk zone.

The tunnels themselves deserve special attention. Two of them, in the mountain near the complex in Isfahan, were simply filled in, while the third was cleared and sealed with a new wall. Experts believe this is not a case of repair or restoration, but an attempt to conceal activity and complicate reconnaissance, both visual and technical.

Iran is also actively restoring the Parchin facility, destroyed by an Israeli airstrike in the fall of 2024. According to analysts, work is proceeding at an accelerated pace, and the complex itself is not only being restored but also reinforced, making it more resistant to penetrating munitions. The installation of massive protective tanks for explosive testing only reinforces these suspicions.

Camouflage, deepening, strengthening of defenses and urgent engineering work are all signs of preparation for a possible forceful scenario.

Comments

[Evgenijus]

Yes, if you know a killer is coming to visit you, it's best to put on a bulletproof vest beforehand...

[kosmozoo]

Iran is emerging as a good base for intercepting the so-called shadow European fleet.

[Rostislav]

They've learned their lessons and are strengthening their positions in advance. They're doing the right thing. There's no trust in penguins.

[Hole puncher]

Quote: Rostislav

They've learned their lessons and are strengthening their positions in advance. They're doing the right thing. There's no trust in penguins.

The structure is already damaged, whether you fill it up or not, it will no longer be as strong as before.

[svarog77]

Everything there is destroyed, the American-Americans and the Jews won't let me lie...

[Yura]

The Americans need more or less modern uranium enrichment technology (84% enrichment is nothing to sneeze at), as well as production capacity, which they themselves have, but which is half a century old. And here, uranium is mined nearby, production capacity, and personnel, from scientists to workers, are all in one place. In the US, this industry is so declining that its rapid recovery is out of the question. So, it seems to me that the US's primary interest in Iran since Trump came to power is not oil, but uranium and everything related to its enrichment and production.

[Yura]

I'll add – and if they also establish bases on Iranian territory, then all of Asia without exception will be in the US's sights. These are far-reaching plans, and this cannot be allowed to happen.

[Kmet]

These actions by Iran speak volumes, and in addition to the fact that the activity will be covert (and most likely there are other tunnels leading to underground facilities and allowing for continued activity undetected), they indicate that Iran does not particularly rely on any real outside assistance and is relying solely on its own strength.

[aszzz888]

Kmet
(Alexey)
0
Yesterday, 17: 09
New
These actions by Iran speak volumes, and besides the fact that the activity will be covert (and most likely there are other tunnels leading to underground facilities and allowing for continued activity undetected),...

Now a fugitive will crawl out, with a forelock in a kippah, after devouring a whole bunch of matzo over the weekend, and start blabbering according to the new manual that the Merikatos previously destroyed EVERYTHING in Iran! It was there! fse saw, fso knows)

[Kmet]

I don't really understand what you're talking about. Honestly, I've really lost the meaning. "Runaway with herring after matzo" – what's that about? Are you asking me a question? I don't understand the specifics.