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Wow that sounds really interesting! You should shoot a few pictues and make a book about it. Thats how it all started in Berlin.. and the guided tours are getting bigger and bigger. There are real treasures down there. I would love to come visit someday.. It sounds super exciting!!

Yes unfortunately it's been a while ago...like 10 years really. Last time I heard the key got lost so I wouldn't know how to get there again...I might have some crappy photos somewhere on my old pc, like I said...over 10 years ago already ;)

Buuu such a shame!

I know, sorry :D