Tunneling Through Granite

The construction at Donner Summit presents monumental challenges, requiring the Central Pacific to carve out 15 tunnels through solid granite. With the summit tunnel demanding workers to dig an astonishing 1,659 feet beneath the surface, the labor is grueling and dangerous. Teams of Chinese workers operate in a relentless cycle, using heavy sledgehammers and drills, showcasing both their resilience and the harsh realities of their labor.