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Chinaman's Arch in the Golden Spike National Historic Site in Utah is a natural memorial to the Chinese laborers who worked on the construction of the Central Pacific Railroad. The arch, consisting of Lake Bonnevile Limestone, was naturally formed through water erosion. The arch is located near Promontory Summit where the driving of the Golden Spike occured on May 10, 1969, marking the completion of the Transcontinental Railroad and is accessible by hiking or auto tour. Photographed 07/07