Ceinws/ Esgairgeiliog. Part of the few remaining bits of the tramway viaduct that carried the tramway from Cambria Wyn quarry over the Aber Glesyrch to the slate mill. It ran about 2 to 3 metres high behind the village shop, over the river and along in front of Dulas cottages before crossing the road to the mill. The river is fast eroding it away now.