Kay is taking us on this hard graded Corn Du & Fan Fawr Circuit walk . Starting from Craig Cerrig Gleisiad, over to Corn Du & back around via Fan Fawr. 20km/12.5 miles, 1100m/3600feet of ascent. Start at the layby at Craig Cerrig Gleisiad nature reserve. OS Explorer Map OL12 grid reference SN 972 221.Continue reading "Walk: Corn Du & Fan Fawr Circuit. 20km/12.5 miles, 1100m/3600feet of ascent (Hard)"