IDF says engineers destroyed 1.5km Hamas tunnel crossing Gaza's Yellow Line

Israeli army engineers have sealed and demolished an underground tunnel route in the southern Gaza Strip that ran for roughly a kilometre and a half and passed beneath the Yellow Line, the boundary of the area of Gaza under Israeli military control, the Israel Defense Forces (IDF) spokesperson said. The military described the tunnel as belonging to Hamas and said rooms meant for use by the group's fighters were found inside it.

According to the IDF, the work was carried out by troops of the Southern Brigade, operating under the engineering unit of the Gaza Division (143rd Division) and Southern Command, together with the Yahalom unit. The Times of Israel reported that the engineers blew up and sealed the passage in what the military called a recent operation, and that the tunnel included several rooms where, by the army's account, Hamas operatives would live. The army released video alongside the announcement on its official channels.

What the Yellow Line is

The Yellow Line is the term used for the boundary inside the Gaza Strip that separates the portion held by Israeli forces from the rest of the territory. Emanuel Fabian, military correspondent for The Times of Israel, described the tunnel as crossing into the Israeli-held portion of the Strip. In its Hebrew statement, the IDF framed the operation as part of a continuing effort to clear the area along the line of what it calls terrorist infrastructure in southern Gaza.

A tunnel that runs under such a line matters to the army because it can, in principle, allow movement between the two sides without crossing on the surface. The reports do not say whether this tunnel was in use, or by whom, at the time it was found.

The units involved

The Gaza Division, numbered 143, is the IDF formation responsible for the Gaza front, and Southern Command is the regional command above it covering the south of Israel. The Southern Brigade is one of the brigades operating under the division. Each division has its own engineering element, which in this case led the troops on the ground.

Yahalom, described by The Times of Israel as an elite unit, is the special operations unit of the IDF Combat Engineering Corps. Its name is a Hebrew acronym, and the word itself means "diamond". The unit is the army's specialist force for locating, mapping and destroying tunnels and for handling explosives, which is why it typically appears in announcements of this kind.

How the reports describe the tunnel

All of the reports agree on the basic facts: a single underground route, about 1.5km long, that crossed the Yellow Line and contained rooms intended for Hamas members. The Hebrew outlets used the same core details. Ynet's news alert gave the 1.5km length and said the route crossed the Yellow Line. N12 reported that the route was about a kilometre and a half long and that living quarters for Hamas fighters had been located inside, citing footage from the IDF spokesperson's office. N12 later issued a lightly edited version of the same item with no change to the facts.

There are small differences in wording between versions. The IDF's English post on X said rooms intended to be used by Hamas were located in the tunnel, while The Times of Israel described them as rooms where operatives would reside. The IDF spoke of the route being sealed and dismantled; the Times of Israel account said it was blown up and sealed. These describe the same outcome and do not appear to conflict. The IDF gave the length as approximate.

All of the information comes from the military. None of the outlets reported independent access to the site, and each attributed the details to the IDF.

Tunnels and the Gaza conflict

Hamas, the Islamist group that ruled Gaza, has built an extensive underground network beneath the Strip, used for moving fighters and weapons, storing equipment and sheltering commanders. Locating and destroying these tunnels has been a central and recurring task for Israeli forces in Gaza, and the army regularly announces individual tunnel demolitions. This announcement fits that pattern: a specific route, a stated length, a description of what was found inside, and video of the demolition.

What the reports do not say

The announcements leave several questions open. They do not give a date for the operation beyond calling it recent, and they do not name the specific location in southern Gaza beyond its link to the Yellow Line. They do not say how the tunnel was detected, how long it had existed, or how much of its length lay on each side of the line. No report mentions whether anyone was inside, whether there was any exchange of fire, or whether any weapons or equipment were found besides the rooms. There is no response from Hamas in the material, and no independent confirmation of the army's account.