 The Doura mineral railway branch to collieries ran east from a junction north of Dubbs (Dubbs Junction) to a bridge across the River Garnock (at Dirrans), then turned northeast to serve a broad arc of collieries to the north of the grounds of Eglinton Castle.After passing Eglinton Colliery and Corsehill Head, the track turned east to a bridge over Lugton Water before a branch line north to the Fergushill colliery.The mineral railway continued southeast past Benslie pit then ended turning north to coal pits at Doura.