Inside the Long-Abandoned British World War II Tunnels

Take a tour inside.

ByABC News
July 20, 2015, 12:19 PM
National Trust volunteer Gordon Wise exploring the tunnels of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent.
National Trust volunteer Gordon Wise exploring the tunnels of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent.
Gareth Fuller/PA Wire/AP Photo

— -- A series of previously closed-off tunnels used during World War II that run along a part of England's coast have been excavated and reopened.

The tunnels, called the Fan Bay Shelter, were originally built in 1940 through 1941 and were used to house the defensive gun battery that was kept at the White Cliffs of Dover in the southeast corner of England, according to historic preservation group The National Trust.

PHOTO: National Trust Project Manager Jon Barker and volunteer Gordon Wise exploreg the tunnels of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent, as they are prepared to be opened to the public.
National Trust Project Manager Jon Barker and volunteer Gordon Wise explore the tunnels of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent, as they are prepared to be opened to the public.

The batteries were located along the coast near the English Channel in order to stop German ships from having access to the waterway. The long-abandoned tunnels have been reopened to the public today after two years of work by a group of National Trust volunteers.

"This network of abandoned tunnels is virtually all that remains of these long forgotten defenses," the National Trust states on their website.

PHOTO: The tunnels of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent, as they are prepared to be opened to the public following two years of National Trust conservation.
The tunnels of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent, as they are prepared to be opened to the public following two years of National Trust conservation.

The shelter was built on the orders of Winston Churchill, who inspected them personally in the summer of 1941.

Graffiti believed to be the original work of soldiers can still be seen in the tunnels and some ammunition from the time was found inside during the excavation.

PHOTO: Graffiti is seen inside the tunnels of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent.
Graffiti is seen inside the tunnels of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent.

The series of tunnels was built into the region's distinct white chalk and includes five bomb proof chambers, a hospital, and shelter for nearly 190 soldiers.

The tunnels were decommissioned in 1950 and filled in, only to be excavated after the National Trust bought the land in 2012 and the volunteers have been working to bring it back to it's historic standing since.

PHOTO: A sound mirror at the site of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent.
A sound mirror at the site of the Fan Bay Deep Shelter, July 15, 2015, in Dover, Kent.

Another notable discovery took place nearby, when volunteers found sound mirrors which were used in WWII. Sound mirrors were early warning devices that helped soldiers detect enemy aircraft.