Construction Of Iran’s “Eagle 44” Underground Airbase Hasn’t Stopped Despite War
Iran is rebuilding Eagle 44, a hardened underground airbase carved into the side of a mountain that can shelter fighter aircraft, drones, and potentially cruise and ballistic missiles, despite the remote facility absorbing at least three rounds of airstrikes this year. High-resolution satellite imagery captured by Planet Labs in late September and reviewed by TWZ shows a new section of taxiway completed, several support buildings still destroyed or damaged, wrecked equipment cleared off the pavement, and obstacles that were placed to obstruct the runway now removed. Construction is ongoing at a time when the Pentagon and Trump administration maintain there is little remaining of the Iranian air force for such a facility to protect.
Graphic depicting key areas of interest at Eagle 44. Photo © 2026 Planet Labs Inc. All rights reserved. Reprinted with permission. TWZ/IAN ELLIS-JONES
Eagle 44, also called ‘Oghab 44’ after the 44th anniversary of the 1979 revolution, was unveiled by Iranian state media in February 2023 when senior officials visited what was described as the country’s newest underground airbase. Islamic Republic of Iran Air Force (IRIAF) F-4D/E Phantom IIs, armed with AGM-65 Maverick air-to-ground missiles, laser and electro-optically guided bombs, unguided ‘dumb’ bombs, as well as domestically produced anti-ship missiles, were shown using the facility in the footage. The IRIAF had roughly 60 examples in service at the time, its most numerous combat jet by some margin, though how many remain today, and are actually operational, is unknown. In addition to the Phantoms, one-way attack drones were also seen in the background.
F-4 Phantom at Eagle 44. Photo: Iranian State Media Another view of an F-4 Phantom at Eagle 44. Photo: Iranian State Media
The IRIAF, rather than the Islamic Revolutionary Guard Corps (IRGC) Aerospace Force, operates the base, which is located in Hormozgan province and sits in the foothills of the Zagros Mountains, approximately 100 miles northwest of the Strait of Hormuz. Iranian state media described it as “one of the army’s most important air force bases, with fighters equipped with long-range cruise missiles and built in the depths of the Earth.” Then-Chief of Staff of the Armed Forces Maj. Gen. Mohammad Bagheri, who was present at the unveiling, warned that “any attack on Iran from our enemies, including Israel, will see a response from our many air force bases including Eagle 44.” He was eliminated in the opening strikes of the Twelve-Day War, which Israel dubbed Operation Rising Lion, in June 2025.
Location of Eagle 44 airbase in southern Iran. Photo: Google Earth
Work on the cavernous underground tunnel complex began in 2013. Construction of a 2.7-mile main runway, situated on the northern side of the base on a valley floor below the mountain range, started roughly eight years later. Two taxiways run through a smaller ridge connecting the runway to four entrances to the primary tunnel complex, where the jets and weapons are stored, although only one taxiway is currently operational.
Timelapse of Eagle 44 from February to October 2026. Video © 2026 Planet Labs Inc. All rights reserved. Reprinted with permission.
The promotional video released in 2023 revealed at least one internal blast door, as well as branches from the main tunnel to revetment areas to park fighters and drones. A support compound of several buildings is on the west side of the base, next to the unfinished taxiway. The purpose of each structure is unclear, but a functioning airbase requires maintenance and repair facilities, crew quarters, reserves of fuel and munitions, security and force protection assets, and infrastructure to coordinate air traffic control and command and control functions.
Video released by Iranian state media in February 2023 reportedly showing the inside of the tunnel complex at Eagle 44.
The United States kicked off Operation Epic Fury alongside Israel on February 28, launching a massive wave of strikes against Iran from the west and south. Eagle 44 is located within striking distance of the munitions carried by air wings embarked on U.S. Navy aircraft carriers operating in the northern Arabian Sea and missiles fired by the guided-missile destroyers that escort them, as well as Air Force tactical and strategic aircraft and Army assets in the region. However, low-resolution images reviewed by TWZ through March 16 indicated that while the base was targeted, little damage was visible.
HIMARS fired during OEF. CENTCOM photo B-1B fuels for OEF mission. USAF photo Super Hornets launch during OEF. Navy photo Guided-missile destroyer USS Spruance fires a Tomahawk Land Attack Missile (TLAM) in support of Operation Epic Fury (OEF). U.S. Navy photo
As the U.S. and Israel continued the relentless air campaign over the next several weeks, the base was targeted again at the end of March, with greater effect, according to a report from The New York Times. High-resolution images the paper reviewed revealed impact craters on the taxiways near the tunnel entrances, one building leveled, and small mounds placed along the runway, presumably to prevent enemy aircraft from landing. Battle damage assessments suggested the strikes were intended to cut the underground caverns off from the runway, trapping whatever was inside and preventing
Source: www.twz.com — article syndicated from the publisher’s feed; all rights remain with the original publisher.