Brick and Mortar
Mortar and brick reinforced the concrete walls, adding another buffer to protect people from air raids. Though the father-son pair had uncovered so much history, they weren’t done yet. They were only 5 feet down, but there were another 5 feet to go!
The Second Discovery
As they continued digging, they noticed that one wall was bricked up. Simon didn’t think they’d find more rooms, but he couldn’t be sure. Still, he told his father that they should leave everything alone; then, the story went viral!