An eastbound CSX coal train--on NS trackage rights--eases downgrade at 15 MPH at Natural Tunnel. No, that's not the "natural" tunnel the train is exiting, but the man-made "Little Tunnel" that leads to it. At the time, pedestrians could walk the tracks through the tunnel, although not for too much longer (notice the "DANGER" sign posted by NS). To get to Natural Tunnel on foot, visitors had to walk through this active railroad tunnel---which could see upwards of 25 movements a day at the time. It wasn't a good situation, as the danger to life and limb was constant, even though there was (and is) a 15 MPH speed restriction for all trains. A chair lift would later be installed to bring visitors to the bottom, but on opening day, guests were greeted by a grumpy NS cop at the bottom, who stopped anyone from going through the small tunnel. Ironically, Natural Tunnel itself was now inaccessible to visitors. This situation was obviously not acceptable to the Virginia State Park System, so a compromise was reached (with NS kicking in some funds on the project) to construct the current system of bridges and walkways to a viewing platform at the mouth of Natural Tunnel itself. And today, this small tunnel is strictly off limits to pedestrians. The motive power on this train includes a big SD45 (third unit) and a U30C. Although the Family Lines and SBD schemes were different, they used the same colors, so the power consist exhibits a rare (at the time) uniformity for CSX.