 It then descended further into the valley of the River Aeron to enter the only principal station and intermediate passing loop on the line at Felinfach.Beyond here the line stayed in the base of the valley on generally level ground, passing the milk creamery at Green Grove and continuing to the halt at Ciliau Aeron.Beyond here the line traversed the country estate of Llanerchaeron, and several halts were provided for workers to travel to the entrance roads to the estate.