Deep beneath the streets of Newcastle, with a ground-level entrance on Ouse Street, is the famed Victoria Tunnel.
Guided tours through the long stretches of dark, quiet corridors offer an insightful look at Newcastle's past.
You can step below Hadrian's Wall, see the conditions of wartime habitation and hear the original operations of transporting coal.
Prior to lockdown, the Victoria Tunnel saw thousands of visitors each year. Now with lifted restrictions allowing tours to continue, it is hoped more people are intrigued to see the Victoria Tunnel for themselves.
Tour Guide Pete Harrison said, "People don't realise what's underneath their feet. You may be walking in Newcastle and you don't know that there's a 19th-century coal waggonway underground."
"A lot of Geordies don't know about it and I think it's just an amazing place to be."
Originally opened in 1842, the Victoria Tunnel was used to transport coal from Spital Tongues (Leaze's Main) Colliery to the River Tyne.
Then in 1939 during World War II, the tunnel was converted into an air-raid shelter. This damp, dark and terrifying refuge kept thousands of Newcastle citizens safe from potential aerial attacks.
In 2008, Newcastle City Council repaired and reopened the tunnel for guided tours with funding from TyneWear Partnership and the Heritage Lottery Fund.
These guided tours are available to book now and offer an interesting insight into Newcastle's past, with small groups of no more than two households currently able to attend.
The tunnel is currently cared for by the Ouseburn Trust.