The profusion of concrete is a determined, but ultimately futile, attempt to shield Sderot's 20,000 citizens from the Qassam rockets that are fired into the town every day. Launched by Palestinian militants from northern Gaza, the home-made rockets have just a few kilometres to travel before impact, leaving residents with no more than 20 seconds to seek refuge.
"It's like Russian roulette. If it's your day you are finished," says Tiger Avraham, the head of the local paramedic team. "Children don't go outside and you cannot walk far from home. It's hard to live like this."
Worn out by the daily alarms and the constant threat to their families, more and more residents are giving up. About 2,000 people have departed this year alone, says Yosef Cohen, the spokesman for the municipality.
"Those who are capable financially have left but the poor can't leave," he says.
The line of fire
More than 7,300 Qassam rockets and mortars have been fired at Sderot and surrounding areas in the past six years, killing 12 people. Earlier versions of the rocket had a range of 3km and carried 500g of explosives, but today's can travel 10km and are packed with up to 20kg of explosives as well as metal pellets. Their accuracy is poor and the vast majority land in open space.
For the citizens of Sderot, the rockets have become a daily source of anxiety. But for Ehud Olmert, the prime minister, they are one of the biggest challenges he faces as he embarks on a round of intense peace negotiations with the Palestinians.
Mr Olmert's political opponents asked how he could go to last month's peace conference at Annapolis and launch talks on Palestinian statehood while an Israeli town was under attack. He also remains vulnerable to criticism over his predecessor's decision two years ago to pull out Israeli troops from the Gaza Strip. Mr Olmert, a senior cabinet member at the time, supported the withdrawal.
Now his inability to stop the incoming Qassams along with last year's botched war in Lebanon is fuelling perceptions that he is weak and lacks the military expertise Israelis expect from their leaders.
Israel's military planners are tormented by the thought of a Qassam blowing up a Sderot school bus or inflicting a large number of civilian deaths through a direct hit. They believe the inevitable outcry would force them to launch a large-scale operation in the densely populated Gaza Strip a move that would result in heavy casualties on both sides and almost certainly stop the peace talks in their tracks.
"There is no general in the Israeli defence forces who likes this idea," says a senior defence official. "But if we do it, it will be because of some massacre that we cannot tolerate."