Exchanging Waves Wtih Engineer While Train Travels Through Horseshoe Curve 照片檔

Altoona, Pennsylvania, USA - July 25, 2026: Onlookers wave back to the engneer of the lead Norfolk Southern Railway locomotive leading an eastbound intermodal freight train descending around Horseshoe Curve. The red, white and blue bunting was a residue from when Union Pacific's 'Big Boy' locomoiteve visited the curve weeks earlier as part of America's 250th brithday celebration. Horseshoe Curve, a U.S. National Historic Landmark, opened to Pennsylvania Railroad traffic in 1854 and is part of a line that rises some 1,300 feet in a 12-mile stretch with the curve in the middle of that climb up the Allegheny Mountains. The length of tracks within Horseshoe Curve is approximately 2,400 feet with a diameter in excess of 1,000 feet and the tracks at Horseshoe Curve rise 122 feet from east to west. Horseshoe Curve is listed on the U.S. National Register of Historic Places.