Brick and Mortar
These concrete walls were reinforced with brick and mortar, which added another layer of protection during air raids. After the father-son duo unearthed the discovery, they weren’t finished. They were only 5 feet down and had 5 feet more to go!
Another Discovery
As they searched, they noticed that one wall was bricked up. Simon didn’t think they’d find more rooms, but he couldn’t be sure. He ended up telling his dad to leave things alone, but then his story went viral!