Finland all set for world’s first underground N-waste burial
10-04-2026
Olkiluoto: Deep beneath the wooded island of Olkiluoto, Finland is finalising Onkalo, the world’s first permanent geological repository for spent nuclear fuel. Descending 430 metres into 1.9-billion-year-old bedrock, the $1.2 billion “cave” is designed to isolate radioactive waste from humanity for 1,00,000 years.