Autumn At The Iona Island Marsh. On Monday, October 27, 2025, the sun was out, the temperatures were moderate, and the color was bright on the trees. The CSX River Sub runs through the Hudson Valley Region of New York, one of the most picturesque rail lines in the Northeast United States. Shooting across the marsh at Iona Island, New York, yielded this view of CSX I157-26 with locomotives CSXT 7300 (CM44AC), 5361 (ES44DC), and 4744 (SD70AC).