A Finnish tunnel built for nuclear waste will be closed forever; its radioactive cargo must remain contained for 100,000 years

Finland’s ONKALO facility is advancing towards the permanent disposal of spent nuclear fuel. Engineers are currently drilling the initial deposition hole dedicated to the definitive disposal of radioactive materials, which will be contained deep underground by several protective barriers. This groundbreaking geological repository is designed to securely isolate waste for approximately 100,000 years, marking a significant shift from testing phases to actual preparations for future disposal canisters.
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