hi all i'm new to the site i've just got a question for you are used to be a zookeeper dudley zoo in the early eighty's and i'm aware that there is a entrance located in dudley zoo by the chairlift that leads to an underground cavern filled with what look like concrete buildings i'm just wondering if anyone knows what these are i cannot find anything on the Internet about this. Me and a friend got in there and had a look around so i know it exists and the large steel entrance doors are still visible in the zoo grounds. The buildings were all concrete and had doorways and windows. I have always wondered what this was. If anyone knows......