| North Tyne Valley and Kielder |
|---|
|
Date: 1979-06-25
The final part of the 2.4-mile stretch of tunnel was completed as part of the Kielder Dam scheme between the Derwent Valley and Letch House near Kiln Pit Hill.
|
| North Tyne Valley and Kielder |
|---|
|
Date: 1979-06-25
The final part of the 2.4-mile stretch of tunnel was completed as part of the Kielder Dam scheme between the Derwent Valley and Letch House near Kiln Pit Hill.
|