We're fascinated by man-made and man-used underground places — from mines to railway tunnels, military defences to nuclear bunkers and everything in between. Join us and explore...
Sites by Category | Sites by Location | Places to Visit | Membership | Events
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Lower Thames Crossing plan for Essex and Kent is approved https://www.bbc.co.uk/news/articles/crewy5472gxo
Here's one way to find out who is the fittest of our members! https://www.bbc.co.uk/news/articles/c9vy4gprv74o
A new tunnel is about to be dug under the River Thames https://www.ianvisits.co.uk/articles/a-new-tunnel-is-about-to-be-dug-under-the-river-thames-79889/
Check out the conference of the National Association of Mining History Organisations https://namho.org/conf2025/confpages/conf_home.php
Demolition work to finally start on council building with underground bunker https://www.cheshire-live.co.uk/news/chester-cheshire-news/demolition-work-finally-start-former-31225916
Come with us to Kelvedon Hatch bunker and Epping Ongar Railway, on 13 April 2025,
Drive yourself or get our minibus.
Kelvedon Hatch is one of only two R4 ROTOR sites remaining.
Later, we'll go to Ongar to ride the 9km long heritage railway on former London Underground Central Line tracks.
Details on our website.
Bookings open 7pm 19 March http://subbrit.org.uk/events/
Videos and photos from our recent visit to the underground factory and air raid shelter in Rochester, built by the aircraft manufacturer Shorts.
Thank you to the team that showed us around.
To come on future expeditions like this become one of our members https://www.subbrit.org.uk/membership/
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The Tamar Bridge Visitor Centre is offering regular tours of the underground cable anchorage chambers. It’s described as ‘an enclosed space with steep steps’, which sounds like fun! https://buff.ly/KWz9Czb
Inside Inverurie's former top secret Cold War nuclear bunker in Gordon House https://buff.ly/BhMSZbL
🌍 Delve into the Nothe Fort Bunker at Subterranea Britannica - Spring Conference!
📅 Date: Saturday, April 12 📍 Location: Canada Water Theatre
Speaker Highlight: Lucy Watkins Discover the history and transformation of the Nothe Fort Civil Defence Bunker. Lucy Watkins will share exciting plans to turn it into a leading Cold War attraction.
🔗 Register now at https://buff.ly/3XcBDTh
#SubbritEvents
🌍 Discover the Rhondda Tunnel at Subterranea Britannica - Spring Conference! 🌍
📅 Date: Saturday, April 12 📍 Location: Canada Water Theatre
Speaker Highlight: Tony Moon Tony will provide updates on the Rhondda tunnel reopening efforts and demonstrate the new ground-to-tunnel communication system. Don’t miss this fascinating talk!
🔗 Register now at https://buff.ly/4kgErZc
#SubBritEvents
The World War II Experience | Visit Gibraltar https://buff.ly/437hXnD
🌍 Join Us at the Subterranea Britannica - Spring Conference! 🌍
📅 Date: Saturday, April 12 📍 Location: Canada Water Theatre
Speaker Highlight: Peter Darley Discover the hidden underground network below Camden with insights not included in his 2024 book!
Engaging talks, networking, and refreshments await. Don’t miss out!
🔗 Register now at https://buff.ly/4kgwx24
#SubBritEvents
The Mystery Triple Tunnel Culverts of Borsdane Woods: Solved? https://buff.ly/4hTOORa
Come to Winchelsea with us for a guided tour of the medieval cellars, explaining their construction and their role in the now ex-port's economy. Originally they stored wine and were later possibly linked to smuggling. Then they were reused in WW2.
Become one of our members today to get in. https://buff.ly/4b0t8jE
Recent video of the exposed Tunstall ROC post due to beach and cliff erosion.
Our site page https://buff.ly/4kbAdSW
Video: https://buff.ly/4hCGk0B
Photos from Archi: Archaeological Sites & Historical Maps Index's post
Rotherhithe Tunnel = A walk through the tunnel + its history. Return to Rotherhithe Part 1. https://buff.ly/3WUhBgi
Cold War Conversations History Podcast has an episode about a visit to the Nottingham nuclear bunker.
“Listen while I navigate the darkened hallways, uncovering artefacts, revealing the stark reality of the Cold War”
It can be listened via a podcast app or on the page linked here, which also has photos of the bunker, and a full transcript.
https://buff.ly/4jV4hBW
FOR SALE: British Rail Channel Tunnel Proposed Route Maps https://buff.ly/4gAiVvr
Do you have skills in IT, communications, PR or events?
We need volunteers to help with our digital tools, publicity/media and wrangling visits and speakers.
Get experience, use your expertise and further our shared interests.
If you can assist in any way please get in touch.
Recording of the talk at London & Middlesex Archaeological Society https://buff.ly/4hjM4fB
Features RAF Staxton Wold remote radar head, an ROC bunker and a piece on the auxiliary units. https://buff.ly/4hDWPsW
"Millions of people pass through #Brighton railway station each year, but how many are aware of the secrets below their feet?"
6 minute audio clip https://buff.ly/3Wvkyn2
Second World War blast shelter reopens for first time in 50 years https://buff.ly/3EiiQPC
A nice short BBC radio feature (8 min) about the world’s deepest hand-dug well in #Woodingdean, near #Brighton, #Sussex: https://buff.ly/40Ov23K
The register is not available to the Ggeneral public.
EXHIBITION: Ana Sanchez who spoke at our last meeting is showing her work at Imperial College in January and February.
The launch includes guided tours by her at 4:30pm & 7:00pm plus a panel discussion on “War and Passive Defense: Shelters and Exiles,” featuring contributions from Dr. Constance Bantman, Dr. Tom Buchanan, Dr. Anna Nyburg, and Mr. Max Streatfield.
Win a free copy of our magazine: 'Subterranea'
To mark our 50th year, 50 random people who fill in this form will receive, by post, the 67th edition of Subterranea - as seen on TV!
It was a recent guest publication on Have I Got News For You!
https://forms.gle/vLA8HLoXgczL17XW8
Give it a go.
To get future magazines visit sites and use our discussion forum, become a member for just £30 per year.
We got a tip off about a definitive survey of this site in #Lowestoft prior to demolition. It was originally a #WW2 ARP post and then used in the #ColdWar as a sub-control.
Detailed survey and photos prior to its demolition. https://buff.ly/3ZxZXka
Photos from British Resistance Archive - Churchill's Auxiliary Units.'s post
Centuries-old cellar found in Alnwick under old stretch of A1 https://www.bbc.co.uk/news/articles/cdel6ek9nwpo
Visit the nuclear bunker at Kelvedon Hatch and the Epping Ongar Railway with us, on 13 April 2025. Drive yourself or get our minibus (limited spaces).
Kelvedon Hatch is one of only two R4 ROTOR sites remaining.
Later, we'll go to Ongar to ride the 9km long heritage railway on former London Underground Central Line tracks.
Book now at http://subbrit.org.uk/events/
We're big fans of this site. Go visit.
Come with us to Kelvedon Hatch bunker and Epping Ongar Railway, on 13 April 2025,
Drive yourself or get our minibus.
Kelvedon Hatch is one of only two R4 ROTOR sites remaining.
Later, we'll go to Ongar to ride the 9km long heritage railway on former London Underground Central Line tracks.
Members only so sign up to join us there.
Details on our website.
Bookings open 7pm 19 March
About the bomb that exploded in the Coronation Avenue basement where residents were sheltering from an air raid https://buff.ly/dM3AMBR
Select tickets – Wemyss Caves Pictish Carvings - Full Guided Tour and Museum 2025 – Terras Hall https://buytickets.at/savewemyssancientcavessociety/1613084
An exciting recent look around the historic and secret Kingsway Exchange before redevelopment https://buff.ly/zuDru9L
Grade II listed former nuclear war room on Bristol housing development up for auction.
Guide price £150,000 https://buff.ly/3XiMwmv
🌍 Explore Pontefract Castle at Subterranea Britannica - Spring Conference! 🌍
📅 Date: Saturday, April 12 📍 Location: Canada Water Theatre
Speaker Highlight: Phil Catling Uncover the secrets of Pontefract Castle's dungeons and the revitalisation efforts of the 'Gateway to the North'. Join us for this and more engaging talks!
🔗 Register now at https://buff.ly/3XcBDTh
#SubBritEvents
🌍 Discover the Underground Wonders of Greenwich at Subterranea Britannica - Spring Conference! 🌍
📅 Date: Saturday, April 12 📍 Location: Canada Water Theatre
Speaker Highlight: Simon Withers Explore the hidden underground spaces of Greenwich with insights from Captivate's recent scans. Learn about the intricate details and see the underground in a whole new light!
🔗 Register now at https://buff.ly/4kgwx24
#SubBritEvents
🌍 Discover the Rhondda Tunnel at the Subterranea Britannica - Spring Conference! 🌍
📅 Date: Saturday, April 12 📍 Location: Canada Water Theatre
Speaker Highlight: Tony Moon Tony will provide updates on the Rhondda tunnel reopening efforts and demonstrate the new ground-to-tunnel communication system. Don’t miss this fascinating talk!
🔗 Register now at on our website.
#SubBritEvents
🌍 Join Us at the Subterranea Britannica - Spring Conference! 🌍
📅 Date: Saturday, April 12 📍 Location: Canada Water Theatre
Speaker Highlight: Peter Darley Discover the hidden underground network below Camden with insights not included in his 2024 book!
Engaging talks, networking, and refreshments await. Don’t miss out!
🔗 Register now on our website.
#SubBritEvents
On 1 May we'll visit the Southern Water Nuclear Bunker, in East Sussex, within the Brede Steam Giants site. Built in the late 80s it was to be an emergency control centre. Our guided tour will explore the control rooms, decontamination showers and other areas.
Become a member now to come along.
Hidden Merseyrail Secrets & Surprises https://buff.ly/42WBlU4
Buy Monty's WWII invasion defence bunker in #TunbridgeWells https://buff.ly/41aJkfd
Here's our page about the site: https://buff.ly/40WdiSL
Photos from British Resistance Archive - Churchill's Auxiliary Units.'s post
FOR SALE: Tunnellers History of Tunnelling Companies in World War One book https://buff.ly/40O2FB9
Finsbury Park Tunnels UNLOCK Its History | Secrets Of The London Underground https://buff.ly/4giHoFG
Demonstration of the sliding hatch of the former Stasi bunker in Machern.
The site was disguised as a holiday camp.
A great museum. Thanks to the guides who showed us around during our East Germany tour in summer 2024.
To join us on future visits like this, become one of our members.
Photos from Palmerston Forts Society and Portsdown Artillery Volunteers's post
Would you store your wine in the dragon’s mound? https://www.thedrinksbusiness.com/2025/01/would-you-store-your-wine-in-the-dragons-mound/
We are getting a tour of the Shorts Brothers Factory and Public Air Raid Shelter, in Rochester on 1 March. https://buff.ly/4h9y73R
Become one of our members to join us on this and future visits!
Forgotten air raid shelter to be removed from under York shop https://buff.ly/42qDCqf
It's the crossover post you've been waiting for:
https://www.facebook.com/share/p/15XYAfqvCU/
BBC News - A417 Missing Link Project: Plans for tunnel to man's home - BBC News https://buff.ly/4gKLC9C
EXHIBITION: Ana Sanchez who spoke at our last meeting is showing her work at Imperial College in January and February.
The launch includes guided tours by her at 4:30pm & 7:00pm plus a panel discussion on “War and Passive Defense: Shelters and Exiles,” featuring contributions from Dr. Constance Bantman, Dr. Tom Buchanan, Dr. Anna Nyburg, and Mr. Max Streatfield.
https://buff.ly/3ZG2V4C
Citadel sale is 'disappointing' says Dover Council leader https://www.bbc.co.uk/news/articles/c627zx4gjgeo
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PICTURES: Victorian-era tunnel discovered underneath Salisbury Railway Station https://trib.al/1nBQCBQ
