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Iran reinforced its Isfahan nuclear site with soil and new roofs, raising concerns over hidden nuclear activities.
New satellite images from February 10, 2026, show Iran has reinforced its Isfahan nuclear site by backfilling tunnel entrances with soil, according to the Institute for Science and International Security.
The changes, visible in high-resolution images from Planet Labs, include sealing middle, southern, and northern tunnel openings and adding passive defense features.
These actions resemble preparations before a joint U.S.-Israel strike in June 2025 and may aim to shield the site from airstrikes or special operations.
Additional images show new roofs over damaged buildings at Isfahan and Natanz, limiting surveillance and inspections.
Iran has not confirmed the purpose of the modifications, but the moves suggest efforts to protect or conceal nuclear infrastructure amid ongoing international concern.
Irán reforzó su sitio nuclear de Isfahan con suelo y nuevos techos, aumentando las preocupaciones sobre las actividades nucleares ocultas.