A photographer who has been exploring London Underground tunnels for six years has captured creepy images of an abandoned station.
Callum Cromwell, shot a disused tunnel called 'Camden's Rat Hole' on his Nikon camera.
The 20-year-old said the scariest moment of the shoot was hearing trains "echo" throughout the space as he filmed.
The only signs of life in the eerily isolated tunnel were the graffiti-stained walls and sounds of footsteps over the rock terrain. Further scenes showed faint torchlight cast over the forgotten tracks.
The abandoned Camden tunnels were originally used to transport horses and pit ponies in the 19th century. The Camden service tunnel cuts underneath the mainline tracks between Euston and Chalk Farm.
"The tunnel is a place I have been wanting to explore for around five years, but it's only recently become accessible again," Callum, who is from Reading said.
"The tunnel is now sealed though. I found it through doing a bit of research into hidden and disused derelict London underground locations.
"The tunnel entrance was pretty easy to get into. The place is a huge giant steel tunnel which is over nine-hundred yards long, and the place had a really damp smell to it
"The only scary moment was hearing the trains on a nearby active track whizzing by and echoing through the tunnel, but that's part of the thrill.
"I have been exploring for six years now and have been going to locations all over the place.
"Urban exploring is about finding and exploring hidden and disused derelict sites that not many get to see, but there are certain rules which apply to it such as do not break in, do not steal, do not do damage, only take photos and leave footprints."
The series of disused tunnels, also known as the Camden Catacombs, were built by Robert Stephenson. In 1869, wine importers W. & A. Gilbey used the network to store alcohol. In recent years, the network of vaults and tunnels are largely submerged due to flooding.
This comes after a secret tunnel was discovered in Elstree.
Not open to the public, nor is it a fancy escape route for the rich, the monorail is owned by the electricity grid as their inspection railway.
Completed in November 2005, the private underground monorail service runs from Elstree to St John's Wood.
The system sits 25 metres below the ground, and connects two 400kV substations at each location, Herts Live reported.
According to an article written by transport enthusiast IanVisits, the substation was required to keep up with London's massive demand for power.
Construction began in April 2001 for the tunnel, which is three metres wide - not much smaller than a tube tunnel.
