There have been many hints about this network of tunnels, known as the "Yankee Quarry" and there have further been many maps pointing to its location, but it was not until recently that it was revealed. This happened thanks to the amateur explorer Marc Askat, age 31. The young man got the chance encounter with a tunnel, which led him right into the heart of history.
Marc Askat went into the depths to find numerous carvings on the walls which have been created by the men who has fought and died for this country many many years ago.
That is a great piece of history to uncover so many years after the fact. It makes us wonder what else might be hidden beneath our own feet.