Interesting drive to get to the secret, can't help think that it wasn't really a secret as someone must have notice people going to the secret bunker? It's eerie that this was once for real! The messages that are constantly played over the intercoms adds to the feeling of impending doom. Some of the public service propaganda is amusing, find a ditch, cover your head and you'll be fine? Unfortunately the "nuclear bunker" experience wasn't working at the time so we sat in the dark for 5 mins waiting for it to happen and it didn't? A very good/scary insight into how it could have gone oh so wrong! Especially if you we're a 60's/70's child and remember some of the documentaries or advice on how to survive a nuclear attack?