In the beginning the tunnel sloped gently downhill, and there used to be sufficient herbal gentle to peer the concrete-reinforced partitions, dodge the tangle of electrical cables and keep away from the air flow pipe putting loosely from a wall.However best 30 metres inside of, the shadows thickened, the air grew scorching and clammy, and the tunnel started a pointy descent into darkness. An Israeli military officer mentioned it dropped dozens extra metres ahead of becoming a member of a limiteless underground community that Hamas had dug underneath Gaza.“That is the largest tunnel we’ve discovered, to this point . . . it used to be a flagship mission,” mentioned the Israel Protection Forces. “We estimate it’s 50 metres deep and 4km lengthy, and feature discovered RPGs and AK-47s saved in depots. Many smaller tunnels lead off it.”Destroying Hamas’s tunnel community is arguably the toughest a part of the Israeli army’s project in Gaza, and amongst its maximum essential. Estimated to be so long as 500km, larger than the London Underground and nicknamed the “Gaza metro”, it has enabled Hamas warring parties to continue to exist 10 weeks of relentless air moves, ambush Israeli flooring forces and extend the combating.On Friday, the Israeli military took a gaggle of reporters to peer one tunnel that Hamas regarded as so vital that its building used to be overseen through Mohammed Sinwar, brother and right-hand guy of Hamas leader Yahya Sinwar, mentioned the IDF.A brief video, assembled through the IDF from what the drive mentioned used to be Hamas photos, it appears confirmed Mohammed Sinwar being pushed in the course of the tunnel in a small automotive ahead of the conflict started.The crowd used to be ended in a gaping steel-rimmed hollow on the backside of an excavated crater. Till the IDF came upon the web page, it lay buried underneath a number of meters of sand in a patch of no-man’s land about 400 metres from the Erez terminal at the Gaza border.This high-tech border crossing had an elaborate gadget of metal doorways and scanners, by which travellers approved through Israeli government would cross between Gaza and Israel. Nowadays, Erez has transform an army meeting level.The bottom used to be chewed up through armoured tracks, and troops milled round constructions ransacked through Hamas militants right through their October 7 assault, after they left greater than 1,200 Israelis lifeless and took about 240 folks hostage.An Israeli soldier out of doors the tunnel, which the IDF believes used to be overseen through Mohammed Sinwar, brother of Hamas leader Yahya Sinwar © John Paul Rathbone/FTIt used to be onerous to believe that Israeli intelligence failed to select up indicators that Hamas had constructed a tunnel sufficiently big to power a automotive thru so with reference to the border. If this is the case, it will be simply any other within the string of safety errors that Israeli officers have mentioned will likely be investigated when the conflict ends.However Mohammed — who’s reported to have a $300,000 bounty on his head, 2d best to the $400,000 presented for his brother — may be a senior army commander. So Hamas adopted tight operational safety at the name of the game web page as neatly.Outdoor the tunnel, a tender Israeli reserve soldier unfurled a poster, which the IDF mentioned described safety procedures for Hamas militants running at the mission. Written in Arabic, one instruction mentioned no longer to usher in cellphones and to make use of landlines best.Any other mentioned employees must no longer make it obtrusive to folks when going out and in. Different directions coated same old protection procedures, equivalent to switching off equipment when completed.It used to be an eerie enjoy to stroll into the tunnel. Instantly within the front, ahead of the tunnel sloped steeply downwards, used to be a deep vertical shaft underneath the ground coated with metal rebars. The air used to be acrid and dirt stung the nostrils.The largest feeling used to be how temporarily the out of doors global dropped away. That, and the unnerving sense {that a} maze, most probably riddled with explosive booby traps, prolonged so far as the above flooring horizon.The IDF held the tightly choreographed discuss with to peer Hamas’s logistical functions because it got here underneath additional western power over the human price of Israel’s Gaza offensive. Partially, the aim of the commute used to be to exhibit the Israeli military’s choice to defeat Hamas and its tunnel gadget at any value.“With out demolishing the tunnel mission of Hamas, we can’t demolish Hamas,” mentioned IDF. “They may be able to attempt to disguise however we will be able to hunt them, even though it method we need to move down.”A bit of the tunnel. Destroying Hamas’s underground community is a key pillar of the Israeli army’s Gaza project © John Paul Rathbone/FTIn section the discuss with used to be to exhibit the IDF’s army quandary. Because it seeks to eliminate Hamas and its army functions in Gaza whilst minimising losses amongst its personal infantrymen, the IDF has destroyed huge swaths of the strip, which is house to two.3mn folks.The relentless bombing marketing campaign has led to large Palestinian casualties — about 19,000 lifeless, most commonly girls and kids, and greater than 50,000 wounded, in keeping with Gaza’s well being ministry. Even US President Joe Biden, who has staunchly subsidized Israel since Hamas’s October 7 assault, remaining week criticised what he known as the “indiscriminate” bombing of the enclave.The opposite is to make use of Israeli flooring troops to transparent city spaces. However that implies incurring heavy Israeli casualties. Closing week, 9 Israeli infantrymen have been killed in fierce house-to-house battle after hidden Hamas warring parties emerged from tunnels. In any other incident, Gal Meir Eisenkot, son of conflict cupboard minister and previous militia leader Gadi Eisenkot, used to be killed after a booby lure exploded through a shaft front.After two hours on web page, the reporters have been led again to Erez. Incessant “crump” sounds got here from the air moves Israeli forces have been launching a couple of kilometres to the south. The explosions seemed like thunder in an drawing near typhoon, with the exception of that the sky used to be cloudless.One Israeli reservist mentioned she used to be decided to lend a hand vanquish the issue of the tunnels, however used to be additionally tormented through the considered what number of Gazans would proceed to perish. However that may be a minority Israeli opinion. Closing week, when US nationwide safety adviser Jake Sullivan instructed an finish to the IDF’s sustained bombardment, defence minister Yoav Gallant spoke back that Israel would proceed to pursue main battle operations towards Hamas for a number of extra months.“Hamas is a terrorist organisation that . . . constructed infrastructure underneath the bottom . . . and it’s not simple to wreck,” he mentioned.