.png)
RHYDYMWYN VALLEY HISTORY SOCIETY
Nant Alyn Road, Rhydymwyn, Mold, CH7 5HQ
Tunnel Tour Season 2026
Tunnel Tours in 2026
Since our formation many years ago as a History Society, we have spread into many areas including Films, TV, Radio, Press, hosted many site tours.
We have become a widely respected authority on Tube Alloys and the genesis and demise of the UK chemical Weapons Industry.
We had not realised at the time that the site had been a secure & secret place for the last 85 years, and even today it is still locked up and guarded. It was a place of fascination to which the managed access to the mysterious tunnels added to the attraction and intrigue.
Although we had many other interests, we found that most of our time and resources were spent on the tunnel tours and increasingly the history of Tube Alloys, especially since the distribution of the Oppenheimer film.
However, in 2025 we were unable to fulfil all the applications for Tunnel tours and we had to cancel one of them.
For 2026 we are making changes in co-operation with Defra concerning the tunnel tours which should enhance the tunnel experience and give a greater throughput for the public.
We are also working on re-populating Building 45 (The Tube Alloys Building) with storyboards to tell the complete story.
We cannot achieve this without further help, if you wish to have more places for more people & dealt with in a more efficient and professional manner, please contact us.
...
Events
2026 - TBA
Clearing the pathway to the magazines.
8th March 2009
Contacts
The Rhydymwyn Valley site is owned by the UK Government and the responsibility for its upkeep rests with the Department for Environment, Food and Rural Affairs. The contract for the security and maintenance of the site is with ISS.
To contact the society directly:
Email barbercolin453@gmail.com
To contact the site directly:
Sando Citra
Landline 01352-741591
Mobile 07801-122976
Email sando.iss-citra@defra.gov.uk
To contact DEFRA directly:
Michael Garrod
Landline 02080-262471
Mobile 07799-347851
Email Michael.Garrod@defra.gsi.gov.uk
The Valley Works, Rhydymwyn
The Valley Works is an important historical site concerned with:-
* UK Chemical Weapons
* History of Chemical Weapons production
* The Initial Research and Development of Nuclear Weapons
* Underground storage facilities for weapons
Rhydymwyn Valley History Society (RVHS)
The RVHS exists to promote the maintenance of the Valley Works site for its historical and educational value and interest. The society collates and stores relevant information relating to the sites history and also strives to inform and educate visitors and groups through pre-arranged talks and site tours
LATEST NEWS
Click here to get all the latest information
MEMBERSHIP
Click here to find out more about Membership
IMPORTANT NEWS ABOUT SITE ACCESS AND AVAILIBILITY
The listed buildings will be returned to public use on completion of work shortly
The Rhydymwyn Valley History Society is an organisation which researches and promotes the operation of the former Ministry of Supply's Valley Works in the Alyn Valley at Rhydymwyn in North-East Wales.
MONTHLY MEETING
Field Studies Centre 17, Nant Alyn Road, RHYDYMWYN, CH7 5HQ
Click to view a larger image.
