Hello! Tbh this is just small bits of infomation that i have heard from the people around me throughout life so i don't exactly know if this is real.
Up in the north of England there are many tunnels built underground that have been used for decades, they were used in ww2 and after. Iv'e been told by the people that used to work there that they used to test anything that could be tested there. Explosives, chemicals, safely recreating disasters for study. Anything really.
There are still science experiments going on in there as of now but it still remains unknown but i hide the location of it. It's been known for a while that there are some strange science stuff happening in there and from one man who used to work in there in the 60's and another who worked there in the 00's and many more. They do test safety, explosives, new chemicals but also on animals and creating weird organisms to help with things like repairing materials and cleaning pipes. In the lesser known areas of the underground tunnels they have apparently tested making a gelatinious black organism that was made from millions of little bacteria that would survive of almost anything and they released it into some ocean but it's like a big blacket sweeping across the ocean floor. Why? I don't know. They also test products that are about 20 years more advanced than what is out nowdays for civillian, military, anything use. Is it true? Well i know the tunnels are very secretive, used for science and are indeed there but these are only the accounts from people who worked there.