The world’s first geological tomb for nuclear waste is rapidly taking shape more than 400 metres below the forests of Finland.
Batches of lethally radioactive uranium will start arriving within two years for burial in the warren of tunnels carved into the bedrock.
Other countries, including the UK, are considering plans to build their own geological disposal facilities, which should safely isolate the 260,000 tonnes of highly radioactive waste that has accumulated worldwide since the dawn of nuclear power in the 1950s.
Sky News was given rare access to the site, called Onkalo, which means “cavity” in Finnish. It is built next to three nuclear reactors on the country’s southwestern coast.
But we were taken down the 5km access road that winds through the bedrock, so deep that our ears popped.
At the bottom, further tunnels fanned out. So far five have been completed, but up to 100 could be built over the coming decades, stretching to more than 40 miles in all.
Our guide was Sanna Mustonen, a geologist and senior project manager for Posiva, the company that runs the facility.
She said the bedrock was formed almost two billion years ago and has remained intact ever since.
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“The rock itself, like in the whole area of Finland, is very stable,” she said.
“We have old rock. We don’t have continental plates nearby, so we don’t have any earthquakes, seismicity, or things like that.”
Image: The waste will be sealed in double-layered metal cannisters
‘There must be security’
Like other countries Finland stores spent nuclear fuel above ground in shielded bunkers while it seeks a long-term solution.
But Mika Pohjonen, managing director of Posiva, said it would be irresponsible to leave such dangerous waste where it could fall into the wrong hands.
He told Sky News: “If you look at history, 300 years back, how many wars have there been in Europe, for example?
“On the surface the interim storage needs active measures from humans, the building needs to be heated, the spent fuel must be cooled, there must be security around it.
“If you look a generation forward you cannot really see that that kind of arrangement would be risk-free enough.”
Various solutions to the nuclear industry’s waste problem have been suggested, including: launching it into deep space, burying it in an ocean trench and dropping it into a fissure in the Earth’s crust.
They’ve been dismissed as unfeasible, expensive or environmentally risky.
Image: The facility is being built into the bedrock of Finland
‘Safe for one million years’
Instead, Posiva will encase spent nuclear fuel in double-layered metal cannisters that will slot into holes bored in the floor of the tunnels.
To keep them dry, they will be swaddled in bentonite, an absorbent material used in cat litter.
More bentonite will be used to backfill the tunnels, which will be plugged with concrete.
When the complex is full in around a century’s time, with perhaps as many as 3,250 cannisters, it will be sealed up and all trace removed above ground.
“It will be safe for one million years,” Mr Pohjonen said.
“There may not be humans here any more because in that time there will be ice ages or [this area will be] underwater but this is designed to keep it out of the biosphere.”
Dummy cannisters are already buried in bentonite and surrounded by sensors.
Some scientists have warned water could corrode the metal, become radioactive and then rise to the surface over millennia.
But Posiva says the multiple barriers keep the waste in and water out. And if there was a leak in a highly unlikely worst-case scenario, modelling shows that by the time any water reached the surface in 10,000 years the radioactivity would have decayed so much that it would not be a threat to life.
Finland’s progress has been watched closely by other countries. Sweden has begun construction of its own deep geological disposal site. France, Switzerland and the UK are further behind.
A shortlist of four possible sites in Cumbria and Lincolnshire has been drawn up.
Image: The metal cannisters will be entombed underground
Bruce Cairns, chief policy adviser at the UK’s Nuclear Waste Services, was also taking a look at Onkalo while we were there.
He said responsible permanent disposal for waste is essential as the country commissions a new generation of reactors.
“We have 70 years’ worth of waste in the UK that’s already accumulated from energy production, defence and industrial processes.
“It’s not going anywhere unless we do something with it. We have to take action to make sure this is managed responsibly, not just for now but for the long term as well.”
Key to Finland’s progress has been engagement with the local community.
Image: Olkiluoto nuclear power station
Locals in favour
The nearest settlement is Eurajoki, about 10 miles away.
The existing nuclear reactors were already big local employers and when the area was selected from a shortlist of disposal sites the local authority voted overwhelmingly in favour.
Vesa Lakaniemi, the town’s mayor, said: “We have had nuclear power here for 40 years.
“People know about nuclear and final [waste] disposal much more than in the areas which don’t have a nuclear power plant.
Hamas has said it will not disarm unless an independent Palestinian state is established with Jerusalem as its capital.
The militant group said it was issuing a statement “in response to media reports quoting US envoy Steve Witkoff, claiming [Hamas] has shown willingness to disarm”.
It continued: “We reaffirm that resistance and its arms are a legitimate national and legal right as long as the occupation continues.
“This right is recognised by international laws and norms, and it cannot be relinquished except through the full restoration of our national rights – first and foremost, the establishment of an independent, fully sovereign Palestinian state with Jerusalem as its capital.”
Hamas also condemned Mr Witkoff’s visit to an aid distribution centre in Gaza on Friday as “nothing more than a premeditated staged show”.
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Trump envoy Witkoff visits Gaza
Hamas said the trip was “designed to mislead public opinion, polish the image of the occupation, and provide it with political cover for its starvation campaign and continued systematic killing of defenceless children and civilians in the Gaza Strip”.
Mr Witkoff said he spent “over five hours in Gaza”. In a post on X on Friday, he said: “The purpose of the visit was to give [President Trump] a clear understanding of the humanitarian situation and help craft a plan to deliver food and medical aid to the people of Gaza.”
Image: Palestinians wait to receive food from a charity kitchen in Gaza City. Pic: Reuters
Elidalis Burges, a critical care nurse in Gaza, told Sky News she saw the US visit as a “PR stunt” and that the American officials were “just being shown a small portion of what is actually happening”.
“I think the visit to the GHF site was just a controlled visit dictated by the Israeli military,” she said. “If they really wanted people to see what is happening here, they would allow international journalists from around the world to enter.
“They would allow the leaders of the world to come here and see.”
Hamas releases hostage video
It comes as Hamas released a video showing Israeli man, Evyatar David, being held hostage in what appears to be a tunnel.
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Video released of Israeli hostage
Mr David was taken from the Nova Music Festival on 7 October 2023.
His family have given permission for media outlets to show the video.
More than a dozen killed by Israeli fire
Gaza health officials have said 18 people, including eight who were trying to access food, were killed by Israeli fire on Saturday.
Witness Yahia Youssef told Reuters news agency he helped carry three people wounded by gunshots and saw others lying on the ground near a food distribution centre.
In response to questions about several eyewitness accounts of violence at one of its facilities, GHF said “nothing [happened] at or near our sites”.
The US and Israel-backed GHF has been marred by controversy and fatal shootings ever since it was set up earlier this year.
According to the United Nations’ human rights office, at least 859 people have been killed “in the vicinity” of GHF aid sites since late May.
Dr Tom Adamkiewicz, who is working at a hospital in Gaza, has said Palestinian children, women and men are “being shot at, basically like rabbits”.
It is a “level of barbarity I don’t think the world has seen”, he told Sky News.
The Israel Defence Forces has repeatedly said it “categorically rejects the claims of intentional harm to civilians” and has blamed Hamas militants for fomenting chaos and endangering civilians.
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Gaza deaths increase when aid sites open
The war in Gaza began when Hamas-led militants killed around 1,200 people, mostly civilians, in an attack on Israel on 7 October 2023 and abducted 251 others. Of those, they still hold around 50, with 20 believed to be alive, after most of the others were released in ceasefires or other deals.
Israel’s retaliatory offensive has killed more than 60,000 Palestinians, according to Gaza’s Hamas-run health ministry, which does not differentiate between militants and civilians in its count.
I gently suggest that people in Britain might be shocked at the idea of a summer break in a country better known for famines and forced labour than parasols and pina coladas.
“We were interested in seeing how people live there,” Anastasiya explains.
“There were a lot of prejudices about what you can and can’t do in North Korea, how you can behave. But actually, we felt absolutely free.”
Image: Pic: Anastasiya Samsonova
Anastasiya is one of a growing number of Russians who are choosing to visit their reclusive neighbour as the two allies continue to forge closer ties following the Kremlin’s invasion of Ukraine.
Last year, North Korean troops supplied military support in Russia’s Kursk region, and now there is economic cooperation too.
Image: Pic: Anastasiya Samsonova
North Korean produce, including apples and beer, has started appearing on supermarket shelves in Russia’s far east.
And last month, Moscow launched direct passenger flights to Pyongyang for the first time in decades.
But can this hermit nation really become a holiday hotspot?
The Moscow office of the Vostok Intur travel agency believes so. The company runs twice-weekly tours there, and I’m being given the hard sell.
Image: Pic: Danil Biryukov / DVHAB.RU
“North Korea is an amazing country, unlike any other in the world,” director Irina Kobeleva gushes, before listing some unusual highlights.
“It is a country where you will not see any advertising on the streets. And it is very clean – even the asphalt is washed.”
She shows me the brochures, which present a glossy paradise. There are images of towering monuments, pristine golf greens and immaculate ski slopes. But again, no people.
Image: ‘There is a huge growing demand among young people,’ Irina Kobeleva says
Ms Kobeleva insists the company’s tours are increasingly popular, with 400 bookings a month.
“Our tourists are mostly older people who want to return to the USSR,” she says, “because there is a feeling that the real North Korea is very similar to what was once in the Soviet Union.
“But at the same time, there is a huge growing demand among young people.”
Sure enough, while we’re chatting, two customers walk in to book trips. The first is Pavel, a young blogger who likes to “collect” countries. North Korea will be number 89.
“The country has opened its doors to us, so I’m taking this chance,” he tells me when I ask why he wants to go.
A British doctor who has just returned from Gaza says a drone followed her colleague home where it wiped out his family.
Nada Al Hadithy also told Sky News presenter Matt Barbet. how one of her patients, a 21-year-old woman who was six months pregnant, lost her baby after she was “blown up in her tent”.
“Her husband was killed, she lost her eye, she had an open fracture, and both her legs were completely destroyed from the bomb blast,”
“This woman is completely emaciated, with no vitamins, no food. And one day her baby stopped moving.”
It comes after Donald Trump‘s Middle East envoy visited a food distribution site in Gaza.
Steve Witkoff and the US ambassador to Israel, Mike Huckabee, toured a Gaza Humanitarian Foundation (GHF) distribution site in the southern city of Rafah on Friday.
The Israeli-backed American contractor’s efforts to deliver food to the region have been mired in violence and controversy, with hundreds killed by Israeli fire while walking to such aid sites since May, according to eyewitnesses, health officials and the UN human rights office.
Israel‘s military says it has only fired warning shots at people who approached its forces, while GHF said its armed contractors have only fired warning shots to prevent deadly crowding.
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Trump envoy Witkoff visits Gaza
Ms Hadithy said the situation in Gaza is “absolutely desperate” and a school classroom’s worth of children “are dying every single day”.
She said there was “a tangible difference in the amount of starvation and the emaciation of our patients” during the three weeks she was in Gaza, adding: “Even the severity of and relentlessness of the bombings was worse.
“It was mass casualty after mass casualty, with people being blown up in their tents, which were meant to be in green zones. The situation was catastrophic.”
She said one colleague – who she described as “patient, joyful and hardworking” – was followed home one day by a quadcopter drone, according to eyewitness testimony from fellow medical workers.
The drone “didn’t kill him on the route where he was on his own, it waited until he was in his tent and greeted his three children and killed all of them”, she added.
During her time in Gaza, Ms Hadithy said she saw “emaciated children”, adding: “So now you’ve got two million starving people in [an area] the same size as Exeter, which in our country and in our census in 2021 had 130,000 people in it.
“That’s two million people with no water, no sanitation, no food, no medical supplies.”
Ms Hadithy also said Gazan health workers themselves are starving. “Never before have I seen such dignified, committed people,” she added.
In a post on X, Mr Witkoff said he had spent more than five hours inside Gaza to gain “a clear understanding of the humanitarian situation and help craft a plan to deliver food and medical aid to the people of Gaza”.
He did not request any meetings with UN officials in Gaza during the visit, UN deputy spokesperson Farhan Haq said.
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Aid dropped into Gaza
The war began when Hamas-led militants killed around 1,200 people, mostly civilians, in an attack on Israel on 7 October 2023 and abducted 251 others. Of those, they still hold around 50, with 20 believed to be alive, after most of the others were released in ceasefires or other deals.
Israel’s retaliatory offensive has killed more than 60,000 Palestinians, according to Gaza’s Hamas-run health ministry, which does not differentiate between militants and civilians in its count.
The Israel Defence Forces (IDF) has been approached for a comment.