TREK DOWN THE TRACKS

A photographer from Beijing goes on an epic journey to retrace the steps of the thousands of Chinese workers who built the First Transcontinental Railroad in the United States

When the "golden spike" was driven to join the tracks of the First Transcontinental Railroad across the United States in 1869, Chinese workers - who did much of the most dangerous and backbreaking work - were kept away from the widely publicized event.

Almost 150 years later, efforts are underway to give faces to those nameless workers who played such a key role in the completion of the railroad.