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Severn Tunnel Closure Summer 2026

Mile Post 13

Member
Joined
20 Jun 2024
Messages
27
Location
Near a proper PSB
Are you sure someones not having you on? I read they'd tracked it back to the Welsh mountains
Quite, it was in the official consultants project reports and was examined again when the corrosion was discovered. The corrosion turned out to be a mixture of pollutants in the water, salt, and bacteria
 
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RailUK Forums

Torfaen

Member
Joined
8 Dec 2025
Messages
58
Location
Pontypool
Are you sure someones not having you on? I read they'd tracked it back to the Welsh mountains
I suppose Belgian water is required to make Belgian beer. The underground river is in the limestone beds which, from Southeast Wales / Forest of Dean, dip under the Severn Estuary and rise again on the English side. I believe the river has multiple sources on the Welsh side and that attempts were made to block a number of stream sinks during the tunnel's construction.
 

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