The plan also included a link with the Newtown and Machynlleth Railway by means of a line from Machynlleth to Ynyslas on the southern shore of the Dyfi estuary opposite Aberdyfi, the Dyfi itself to be bridged at this point.
Presenter Neil Oliver visited the sands of Aberdyfi and Ynyslas, near Borth, and examined the remains of the submerged forest and Sarn Badrig which are revealed at low tide, assisted by local historians and dendrochronologists.
However the Cambrian Railways would not permit the tramway to cross its line at any point between Machynlleth and Aberystwyth, leaving no alternative but to unload into barges to get under the bridge at Ynyslas, and then tranship to coasters from the barges the other side.