Great Sierra Wagon Road - Credit: Wikimedia Commons
The Great Sierra Wagon Road was a route through the Sierra Nevada in California, built to bring supplies to the Great Sierra Mine on Tioga Hill in the high country of what was to become Yosemite National Park. The road was built in 1882 by the Great Sierra Silver Mining Company, extending over , in 130 days. The mine promptly shut down, leaving the road without a purpose. In 1915 the road was purchased by Stephen T. Mather, the independently wealthy first director of the National Park Service, who donated it to the Park Service. The Park Service opened the road to the public, calling it the Tioga Road. Designated California State Route 120, the road traverses the park from its west to east entrances. Read more on Wikipedia
Source: en.wikipedia.org