FESTINIOG or FFESTINIOG, a town of Merionethshire, North Wales, beautifully situated at the head of the Festiniog valley, 600 ft. above sea level. Pop. of urban district There are important slate quarries in the neighbourhood, especially at Blaenau Festiniog, the junction of the L.M.S. and G.W.R. with a narrow-gauge line between Portmadoc and Duffws. This light railway runs at a considerable elevation (some 700 ft.), command ing a view across the valley and Tan y Bwlch lake. The Cynfael falls are famous. Near are Beddau gwyr Ardudwy (the graves of the men of Ardudwy), memorials of early warfare. The slate industry was very depressed in 1928.