Subterrenea Britannica
@subbrit.bsky.social
The UK society for studying man-made and man-used underground places. Discover mines, tunnels, nuclear bunkers, caves, military defences and more.
Pinned
As well as our society's activities, we focus our posts on news about man-made/used underground spaces in the UK and permitted exploration of them.
Our magazine, events, site visits and online forum have a wider scope, as benefits of membership.
Join to learn more at www.subbrit.org.uk/membership/
Our magazine, events, site visits and online forum have a wider scope, as benefits of membership.
Join to learn more at www.subbrit.org.uk/membership/
🗣️ TALK: Celtic folk & faery lore, sacred Celtic caves, chambers & cairns
By Joanne McFall
At our Conference and AGM
11 April 2026 at Canada Water Theatre, London.
Book a seat www.subbrit.org.uk/events
#SubbritEvents
By Joanne McFall
At our Conference and AGM
11 April 2026 at Canada Water Theatre, London.
Book a seat www.subbrit.org.uk/events
#SubbritEvents
February 15, 2026 at 11:00 AM
🗣️ TALK: Celtic folk & faery lore, sacred Celtic caves, chambers & cairns
By Joanne McFall
At our Conference and AGM
11 April 2026 at Canada Water Theatre, London.
Book a seat www.subbrit.org.uk/events
#SubbritEvents
By Joanne McFall
At our Conference and AGM
11 April 2026 at Canada Water Theatre, London.
Book a seat www.subbrit.org.uk/events
#SubbritEvents
🗣️ TALK: Tunnel 57 & other escape tunnels under the Berlin Wall 🇩🇪🧱
By Athena Kerins from Berliner Unterwelten
www.linkedin.com/in/athenaker...
At our Conference and AGM
11 April 2026 at Canada Water Theatre, London.
Book a seat www.subbrit.org.uk/events
#SubbritEvents
By Athena Kerins from Berliner Unterwelten
www.linkedin.com/in/athenaker...
At our Conference and AGM
11 April 2026 at Canada Water Theatre, London.
Book a seat www.subbrit.org.uk/events
#SubbritEvents
February 13, 2026 at 11:09 AM
🗣️ TALK: Tunnel 57 & other escape tunnels under the Berlin Wall 🇩🇪🧱
By Athena Kerins from Berliner Unterwelten
www.linkedin.com/in/athenaker...
At our Conference and AGM
11 April 2026 at Canada Water Theatre, London.
Book a seat www.subbrit.org.uk/events
#SubbritEvents
By Athena Kerins from Berliner Unterwelten
www.linkedin.com/in/athenaker...
At our Conference and AGM
11 April 2026 at Canada Water Theatre, London.
Book a seat www.subbrit.org.uk/events
#SubbritEvents
Something missing?
If you know the history of an underground place that should be, but isn't on our website www.subbrit.org.uk, please send text, and ideally pictures (your own not copied) to [email protected], citing sources whenever possible.
If you know the history of an underground place that should be, but isn't on our website www.subbrit.org.uk, please send text, and ideally pictures (your own not copied) to [email protected], citing sources whenever possible.
February 10, 2026 at 6:04 PM
Something missing?
If you know the history of an underground place that should be, but isn't on our website www.subbrit.org.uk, please send text, and ideally pictures (your own not copied) to [email protected], citing sources whenever possible.
If you know the history of an underground place that should be, but isn't on our website www.subbrit.org.uk, please send text, and ideally pictures (your own not copied) to [email protected], citing sources whenever possible.
There are lots of great underground sites for the public to explore. Check them out on our website https://f.mtr.cool/zkrxgpbemf
February 9, 2026 at 10:03 AM
There are lots of great underground sites for the public to explore. Check them out on our website https://f.mtr.cool/zkrxgpbemf
Info on some of our web pages about underground places is stale!
Send us your latest photos and details about their condition and status, using the 'Submit an update' on every site page.
We'd also love fuller historical information about many sites if you can provide it (without extensive copying).
Send us your latest photos and details about their condition and status, using the 'Submit an update' on every site page.
We'd also love fuller historical information about many sites if you can provide it (without extensive copying).
February 8, 2026 at 5:59 PM
Info on some of our web pages about underground places is stale!
Send us your latest photos and details about their condition and status, using the 'Submit an update' on every site page.
We'd also love fuller historical information about many sites if you can provide it (without extensive copying).
Send us your latest photos and details about their condition and status, using the 'Submit an update' on every site page.
We'd also love fuller historical information about many sites if you can provide it (without extensive copying).
Visit a relic of the cold war under a quiet #Dundee street.
See what members of the Royal Observer Corp at @28group.bsky.social would have faced if nuclears bomb had dropped
March 13-14 2026
www.eventbrite.co.uk/e/dundee-col...
See what members of the Royal Observer Corp at @28group.bsky.social would have faced if nuclears bomb had dropped
March 13-14 2026
www.eventbrite.co.uk/e/dundee-col...
Dundee Cold War Bunker
Visit a relic of the cold war under a quiet Dundee street. See what members of the Royal Observer Corp would have faced if the bomb dropped
www.eventbrite.co.uk
February 6, 2026 at 2:53 PM
Visit a relic of the cold war under a quiet #Dundee street.
See what members of the Royal Observer Corp at @28group.bsky.social would have faced if nuclears bomb had dropped
March 13-14 2026
www.eventbrite.co.uk/e/dundee-col...
See what members of the Royal Observer Corp at @28group.bsky.social would have faced if nuclears bomb had dropped
March 13-14 2026
www.eventbrite.co.uk/e/dundee-col...
Reposted by Subterrenea Britannica
I went on a hunt for the new Piccadilly Line tube trains yesterday.
I'd seen that they were testing them around Acton Town on Saturday, so headed over there to see if I could see one, and I struck the jackpot! There was one waiting in a siding, then another came round the corner into the platform!
I'd seen that they were testing them around Acton Town on Saturday, so headed over there to see if I could see one, and I struck the jackpot! There was one waiting in a siding, then another came round the corner into the platform!
January 19, 2026 at 12:19 PM
I went on a hunt for the new Piccadilly Line tube trains yesterday.
I'd seen that they were testing them around Acton Town on Saturday, so headed over there to see if I could see one, and I struck the jackpot! There was one waiting in a siding, then another came round the corner into the platform!
I'd seen that they were testing them around Acton Town on Saturday, so headed over there to see if I could see one, and I struck the jackpot! There was one waiting in a siding, then another came round the corner into the platform!
Reposted by Subterrenea Britannica
I caught up with it at Hammersmith, saw two units out on test trundling up and down the line. Official TfL line is that the trains will enter service in the second half of 2026.
January 19, 2026 at 3:50 PM
I caught up with it at Hammersmith, saw two units out on test trundling up and down the line. Official TfL line is that the trains will enter service in the second half of 2026.
Sea erosion has caused the Royal Observer Corp post at Tunstall to fall down on the beach.
It's been the biggest cliffhanger since a sister post at Aldborough met a similar fate.
Movie rights belong to Timothy Travels. Check out their films www.youtube.com/@timothystra...
It's been the biggest cliffhanger since a sister post at Aldborough met a similar fate.
Movie rights belong to Timothy Travels. Check out their films www.youtube.com/@timothystra...
January 24, 2026 at 5:29 PM
Sea erosion has caused the Royal Observer Corp post at Tunstall to fall down on the beach.
It's been the biggest cliffhanger since a sister post at Aldborough met a similar fate.
Movie rights belong to Timothy Travels. Check out their films www.youtube.com/@timothystra...
It's been the biggest cliffhanger since a sister post at Aldborough met a similar fate.
Movie rights belong to Timothy Travels. Check out their films www.youtube.com/@timothystra...
TOUR: Paddington, London. "Explore the undercroft and chapel and hear how this subterranean sanctuary was created through inventive engineering and expressive Victorian design."
www.eventbrite.co.uk/e/beneath-th...
www.eventbrite.co.uk/e/beneath-th...
Beneath the Stones: A Subterranean Tour of St Mary Magdalene's Church
Descend below the church and discover one of Paddington's most atmospheric spaces.
www.eventbrite.co.uk
January 24, 2026 at 12:02 PM
TOUR: Paddington, London. "Explore the undercroft and chapel and hear how this subterranean sanctuary was created through inventive engineering and expressive Victorian design."
www.eventbrite.co.uk/e/beneath-th...
www.eventbrite.co.uk/e/beneath-th...
How many people are both Subterranea Britannica members and Dungeons & Dragons players?
Any such people will enjoy '2026 Campaign Day: Subterranean Empire' by The Charity Gaming Guild in Ipswich
www.eventbrite.co.uk/e/2026-campa...
Any such people will enjoy '2026 Campaign Day: Subterranean Empire' by The Charity Gaming Guild in Ipswich
www.eventbrite.co.uk/e/2026-campa...
2026 Campaign Day: Subterranean Empire
Our 2026 Campaign Day is back for its third year as we delve below the earth's surface...
www.eventbrite.co.uk
January 22, 2026 at 12:01 PM
How many people are both Subterranea Britannica members and Dungeons & Dragons players?
Any such people will enjoy '2026 Campaign Day: Subterranean Empire' by The Charity Gaming Guild in Ipswich
www.eventbrite.co.uk/e/2026-campa...
Any such people will enjoy '2026 Campaign Day: Subterranean Empire' by The Charity Gaming Guild in Ipswich
www.eventbrite.co.uk/e/2026-campa...
Book your ticket for our next conference: Saturday 11 April 2026 in London.
It' will be an excellent day together with loads of interesting underground subjects.
Speakers include Athena Kerins from Berliner Unterwelten.
www.eventbrite.co.uk/e/subterrane...
(Members:book via account on our website)
It' will be an excellent day together with loads of interesting underground subjects.
Speakers include Athena Kerins from Berliner Unterwelten.
www.eventbrite.co.uk/e/subterrane...
(Members:book via account on our website)
Subterranea Britannica - Spring Meeting
Join us for a day of talks including Berlin escape tunnels & bunkers, underground locations in Celtic folklore, the Fauld explosion & more.
www.eventbrite.co.uk
January 20, 2026 at 12:00 PM
Book your ticket for our next conference: Saturday 11 April 2026 in London.
It' will be an excellent day together with loads of interesting underground subjects.
Speakers include Athena Kerins from Berliner Unterwelten.
www.eventbrite.co.uk/e/subterrane...
(Members:book via account on our website)
It' will be an excellent day together with loads of interesting underground subjects.
Speakers include Athena Kerins from Berliner Unterwelten.
www.eventbrite.co.uk/e/subterrane...
(Members:book via account on our website)
Please donate to help the @28group.bsky.social team keep the great ROC Group HQ site in #Dundee secure.
www.facebook.com/donate/12521...
www.facebook.com/donate/12521...
Facebook
www.facebook.com
January 18, 2026 at 6:17 PM
Please donate to help the @28group.bsky.social team keep the great ROC Group HQ site in #Dundee secure.
www.facebook.com/donate/12521...
www.facebook.com/donate/12521...
As solid as a ROC post...?
www.bbc.co.uk/news/article...
www.bbc.co.uk/news/article...
Nuclear bunker nears collapse due to coastal erosion
The brick building, on the East Yorkshire coast, is thought to be about 70 years old.
www.bbc.co.uk
January 14, 2026 at 12:23 AM
As solid as a ROC post...?
www.bbc.co.uk/news/article...
www.bbc.co.uk/news/article...
Some stuff about underground places on our web pages is getting old!
Send us your newer photos and details about their condition and status, using the 'Submit an update' on every site page.
We'd also love fuller historical information about sites if you can provide it (without extensive copying).
Send us your newer photos and details about their condition and status, using the 'Submit an update' on every site page.
We'd also love fuller historical information about sites if you can provide it (without extensive copying).
January 10, 2026 at 11:11 AM
Some stuff about underground places on our web pages is getting old!
Send us your newer photos and details about their condition and status, using the 'Submit an update' on every site page.
We'd also love fuller historical information about sites if you can provide it (without extensive copying).
Send us your newer photos and details about their condition and status, using the 'Submit an update' on every site page.
We'd also love fuller historical information about sites if you can provide it (without extensive copying).
LECTURE at @ice_engineers in Westminster
prop-less tunnel openings with special segments: HS2 northolt tunnels
Innovative design and construction of large prop-less openings in HS2’s segmentally lined Northolt Tunnels using specially engineered segments
www.ice.org.uk
January 9, 2026 at 11:11 AM
LECTURE at @ice_engineers in Westminster
WEBINAR: January 28 from 7pm to 8:30pm
The National Gallery’s Second World War Treasure Caves
Manod Quarry, North Wales: Subterrain Storage Facility
www.eventbrite.co.uk
January 8, 2026 at 4:04 PM
WEBINAR: January 28 from 7pm to 8:30pm
WEBINAR: Jan 26 from 7:30pm to 9pm GMT www.eventbrite.co.uk/e/the-southw...
The Southwark Deep Shelter, from tube line to nuclear Armageddon
Dr Chris Constable Borough Archaeologist takes us underground to uncover the secrets of the shelter.
www.eventbrite.co.uk
January 8, 2026 at 11:11 AM
WEBINAR: Jan 26 from 7:30pm to 9pm GMT www.eventbrite.co.uk/e/the-southw...