LLYN ALED DAM
NEATH ABBEY IRONWORKS: AFON CLYDACH DAM
GWAEN GYNFI DAM
Cwm Elan Dam Workers, 1902
RHEIDOL HYDRO-ELECTRIC SCHEME: NANT-Y-MOCH...
Penygarreg Dam, Elan Valley
Elan Valley reservoir
Elan Valley
Foel tower
Pen-y-Garreg Dam Elan Valley
Penygarreg reservoir, Elan Valley
Garreg Ddu, Elan Valley
Penygarreg dam, Elan Valley
Graig-goch reservoir, Elan Valley
Men and women in buses and cars visiting a...
Graig Goch Dam Elan Valley
Caban Coch dam, Elan Valley
Graig-goch dam, Elan Valley