 The light track originally was carried by a high trestle across the ravine leading to Cadjaw Pond outside of Honesdale, but in 1848, the trestle was replaced by a horseshoe curve.In 1848, the D&H extended the gravity railroad southward from Carbondale to newly opened mines at White Oak Run in Archbald.The extension continued the scheme for light and loaded tracks that had been adopted for the 1844 improvements.