The UK society for studying man-made and man-used underground places. Discover mines, tunnels, nuclear bunkers, caves, military defences and more.
Joined August 2011
- Tweets 5,570
- Following 210
- Followers 4,115
- Likes 1,034
378 Photos and videos
Pinned Tweet
1 Feb 2025
We now only post on Instagram, Threads, and BlueSky with the same handle: subbrit.
We have a page on Facebook too.
Follow us there.
Join as a member to learn more about hidden places from our: online forum, magazine, events and site visits subbrit.org.uk/membership
ALT Middleton Mine with tiny figure showing vast scale of the chamber
2
4
474
Subterranea Britannica retweeted
5 Sep 2025
š Open House Weekend: Visit the Generator House
Step inside a rarely seen part of the Battle of Britain Bunker ā the Generator House, once vital for backup power during WWII.
šļø 13-21 Sept
š
Find out more here: buff.ly/AecZm5p
6
12
1,458
Subterranea Britannica retweeted
23 Jul 2025
Open again this Saturday if anyone wants to drop by.
2
6
16
1,319
Subterranea Britannica retweeted
23 Jul 2025
#OnThisDay 54 years ago the Victoria Line opened between Victoria and Brixton via Vauxhall and Stockwell (Pimlico opened in 1972). It was intended to continue to Streatham Hill, Streatham, and Norbury but never made it beyond here. More @tubemapper magic buff.ly/c0fy7Mz
ALT Looking out of the open doors of a 2009 Stock standing at the platform at Brixton, the 'ton of bricks' tiled motif behind a platform bench is perfectly framed, with two blurred passengers either side hurrying past adding to the symmetry.
3
18
99
4,395
Subterranea Britannica retweeted
22 Jul 2025
š®Network Rail has just uncovered after being sealed for decades! the original 1849 rope winding vault for the Victoria Tunnel at Edge Hill. As with the Wapping and Lime Street tunnels, it used a steam-powered rope haulage system to pull rolling stock up from the docks
10
77
679
55,675
Subterranea Britannica retweeted
OTD 25March 1843 Thames Tunnel opened to the public
The Ist sub aqueous tunnel in the world
Built between 1825 &1843 usingĀ Marc Isambard Brunel's & Thomas Cochrane'sĀ newly inventedĀ tunnelling shieldĀ technology by Brunel & his sonĀ Isambard Kingdom Brunel
en.m.wikipedia.org/wiki/Thamā¦
1
6
10
902
Subterranea Britannica retweeted
19 Mar 2025
The UKās power provider, National Grid has received full planning approval for the Grain to Tilbury project from Thurrock Council in Essex and Gravesham Borough Council in Kent, a key milestone in strengthening the UKās energy network
tunnellingjournal.com/uks-naā¦
1
2
429
Subterranea Britannica retweeted
25 Feb 2025
Amazing opportunity to join other uniformed groups for a sleepover under the Spitfires and Hurricaneās at the Battle of Britain Bunker. This normally sold out event has a cancellation for the 22/23rd March.
For more details contact our Education team at bunker@hillingdon.gov.uk
1
5
4
863
Subterranea Britannica retweeted
21 Jan 2025
New tours reveal Green Park tube station's disused tunnels and wartime bedrooms
ianvisits.co.uk/articles/newā¦
Green Park tube station is famous for the long tunnels between its platforms, but hidden behind small anonymous doors is an even larger tube station with a deep hist...
2
9
59
5,278
Subterranea Britannica retweeted
22 Jan 2025
New 2nd channel video tomorrow and getting closer to a main channel video to. But as you can see #secretgarage is taking shape. #colinfurze #secrettunnel #engineering
29
18
642
22,963
23 Dec 2024
The register is not available to the Ggeneral public.
The National Underground Asset Register (NUAR) will ensure that critical works like repairing power lines & fixing water mains can happen, improving worker safety, reducing delays and benefiting the economy over Ā£400m per year.
NUAR will safeguard Christmas for years to come š
1
508
Subterranea Britannica retweeted
14 Dec 2024
East Casemates - Fort Clarence, Rochester. June 2020
2
14
421
Subterranea Britannica retweeted
12 Dec 2024
Nuclear war bunker by the sea keeps chilling secrets underground
The hidden time capsule opens to the public on selected dates each year
cornwalllive.com/whats-on/unā¦
1
2
8
1,076
Subterranea Britannica retweeted
OTD12Dec 1849 Death of Sir Marc Isambard #Brunel
Most famous achievement #ThamesTunnel 1825-1843 made possible by 1818 #tunnellingshield patent jointly with Sir Thomas Cochrane
Many other projects including designing machinery to automate production ofĀ pulley blocksĀ for RoyalNavy
5
3
610
Subterranea Britannica retweeted
12 Dec 2024
This looks epic, seeing the how the tunnel and garage sit round the house and the bunker at the bottom of the garden just waiting to be connected, you know where to find it, see you there. #colinfurze #secretgarage #engineering #selfbuild #secrettunnel #diy #bunker #3dscanning
23
29
618
37,388
Subterranea Britannica retweeted
December 4 St Barbara's FeastDay & #WorldTunnellingDay
St Barbara the Patron Saint of Tunnellers
Traditionally Saint's statue placed by entrance of a tunnelling project to protect tunnellers
Brunel's #ThamesTunnel & #rotherhitheroadtunnel 2 important tunnels here in #rotherhithe
3
4
468
Subterranea Britannica retweeted
1 Dec 2024
Very much looking forward to the next @LonMidArchSoc talk, Dec 19th on the Southwark Deep Shelters, eventbrite.co.uk/e/lamas-lecā¦
7
15
949
Subterranea Britannica retweeted
1 Dec 2024
"The forgotten street found behind a hidden library door.
Behind a door deep within the lower floors of the National Library of Scotland lies a forgotten street which gives a glimpse of how Edinburgh looked centuries ago."
bbc.co.uk/news/articles/cly2ā¦
4
7
39
1,759
Subterranea Britannica retweeted
30 Nov 2024
I suspect this is a secret tunnel that allows trains from Exeter St David's to get to Grateley without stopping or even materialising at Salisbury
salisburyjournal.co.uk/news/ā¦
1
4
294