How do you survive a nuclear detonation with a secret bunker of course take the family to the kelvedon hatch secret nuclear bunker in brentwood where two adults and up to three children can safely ride out any potential apocalypse you will get to explore the hidden history of this fascinating facility and see how the intended residents would have lived and continued working despite the hideous mutations roaming above ground you will feel so safe you will want to build a bunker at home