The family couldn’t find anything but this reddit user didn’t stop. He kept on digging and eventually came across something. There was something hidden behind the wall. The surprise here was that the wall wasn’t as old as the the house, it was built quite recently. While exploring 32 inches thick wall, he spotted an opening on top of it. He climbed up with the help of ladder and took a peek through the hole. He froze, when he found what was there. The fact of house being an important source in the history actually came out to be true. This was a smuggling hub.