This is just a scary image. According to the caption it’s:
One of five underground bunkers built for the East German Foreign Intelligence Service.
Take a guess what year, then click on the image to see the original which has the date on it (I cropped and scaled this one).
According to Wikipedia, the image is a work of the US Government (and therefore in public domain) and is found on the CIA website.
Does anyone else think it looks about 30 years older than it actually is? Looks like 50’s-60’s to me. Yikes, that makes me feel old. Check out the awesome tech!