The Concrete Dome
Thousands of cubic metres of radioactive waste lies buried under a concrete dome on the Enewetak Atoll in the Marshall Islands, the legacy of over a decade of US nuclear tests in the Pacific.
Now rising sea levels are threatening to spill its contents into the sea.
in the late 1970s, Runit Island, on the remote Enewetak Atoll, was the scene of the largest nuclear clean-up in United States history.
Highly contaminated debris left over from dozens of atomic weapons tests was dumped into a 100-metre wide bomb crater on the tip of the uninhabited island.
US Army engineers sealed it up with a half-metre thick concrete cap almost the size of an Australian football ground, then left the island.
Now with sea levels rising, water has begun to penetrate the dome.
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