Video: We already saw how the new $2.1 billion (€1.5 billion) sarcophagus — the 275m wide, 108m tall steel shield that entombs the radioactive material leaking from the damaged nuclear reactor left over from the Chernobyl disaster — was going to be put in place to replace the old concrete structure that enclosed the damaged reactor in a picture but here’s a time lapse showing the entire process. Seeing the gigantic arch structure slide in shows what a feat of engineering this was. It’s a really, really, really snug fit.