These tunnels are designed for 100,000 years

Onkalo, on the Finnish island of Olkiluoto, is planned to be the first geologic storage facility for high-level nuclear waste: eventually sealed for 100,000 years. I got to see inside.Thanks to all the team from Olkiluoto, TVO and Posiva: you can find out more at http://www.posiva.fi/en/final_disposal/onkaloEdited by Michelle Martin (@mrsmmartin)Audio mix by Haerther Productions https://haerther.netI'm at https://tomscott.comon Twitter at https://twitter.com/tomscotton Facebook at https://facebook.com/tomscottand on Instagram as tomscottgo