As the distant train whistle sounded on July 4, the night sky above the Allegheny Mountains was filled with a spectacular light show celebrating the 150th anniversary of the famed Horseshoe Curve stretch of track near Altoona, PA. The beams came from 24 Osram XBO 7,000W searchlights riding in the railcars. Simultaneously, the surrounding hillside lit up, and, section by section, the entire landscape was revealed in a dynamic show. Presented by Osram Sylvania and lighting design firm ...

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