Finland is set to begin operations at Onkalo, the world's first permanent nuclear waste disposal facility, located on Olkiluoto island. The €1 billion facility will safely store spent nuclear fuel underground, addressing the long-term management of radioactive waste. While it offers a solution to storage issues, experts warn of uncertainties and risks for future generations. The facility aims to isolate waste from civilization, with a capacity of 6,500 tons, and is part of Finland's commitment to handle its own nuclear waste.