Trên o'r enw Coel gyda'r Fan Arolygu a Mr....
Craeniau ar argae Caban Coch, Cwm Elan yn ystod...
Dol y Mynach Dam, Elan Valley under...
Craig Goch dam, Elan valley under construction...
Elan Valley Filter Beds near Caban Coch Dam,...
Caban Coch dam, Elan Valley Laying of the...
Caban Coch interior of cement cooling shed.
Caban Coch construction, Elan Valley
Dechrau adeiladu argae Caban Coch, Cwm Elan
Craig Goch Dam Main Trench, Elan Valley
Construction of Caban Coch Dam
Old Nantgwyllt Church
Warley Reservoir interior
Elan Valley Aqueduct Teme Bridge Leintwardine
Elan Valley Aqueduct Stour Canal crossing.
Ithon aqueduct looking west.
Frankley Reservoir stream diversion and east wall.
Frankley Reservoir pipe store and Masons'...
Frankley Reservoir main diversion wall looking...
Frankley Reservoir South outlet well.
Frankley Reservoir inlet weirs
Frankley Reservoir Northern Division
Frankley Reservoir filters
Frankley Reservoir Curved Wall looking East.
Deepwood Siphon Outlet
Elan Valley Aqueduct Compensation Works
Elan Valley Aqueduct pipe.
Elan Valley Aqueduct Wye Siphon Lowering pipe.
Elan Valley Aqueduct Wye siphon general view East.
Elan Valley aqueduct tube being inserted.
