Posted by Steve Larson on February 3, 2020  Isn't that another RR track off to the right? Posted by Rudolf Gruetter on February 3, 2020  The track is part of the line over Jinpeng pass. To the right Xiakengzi station is visible. From there the line continues to the lower horseshoe curve and then to the Simingyi viaduct which is part of the upper horseshoe curve.

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