The History Blog reports that archeologists, local firefighters, and National Park Service staff have started to explore a tunnel dug during a siege in South Carolina in 1781. This is apparently the only tunnel created during a Revolutionary War siege to survive, and, in fact, it survived in good shape.
The 125-foot tunnel was designed by Polish humanist, engineer and Revolutionary War hero Thaddeus Kosciuszko during the 1781 siege of the earthen Star Fort in the town of Ninety Six, South Carolina. The plan was for the tunnel to extend underneath the Star Fort so that it could be mined from below and blown up. British reinforcements arrived before the tunnel was finished, which is why it, unlike its more successful brethren, managed to survive the war.
Now that the path has been cleared, researchers will fully map and measure the tunnel with 3D imaging, laser scanning and remote sensing technology. This will give archaeologists a detailed understanding of the tunnel’s condition, and, since the it can’t be opened to the general public for its own good and ours, it will allow researchers to create 3D models to bring the tunnel to life for park visitors.
You can read more and watch a video at http://www.thehistoryblog.com/archives/30159.