3Big Oak Flat and Groveland provide a window into hundreds of years of California history. For millennia, the Me-Wuk people lived in harmony with the environment, tapping nature for their food and shelter. Then, in 1848, James Savage found gold, and the 49er Gold Rush brought a placer mining boom. The two towns developed almost overnight. However, the easy ore was soon depleted, and a devastating fire in 1863 contributed to a severe decline in population and prosperity. In the 1880s, improved technology led to a new "hard rock" mining boom, but in 30 years, it also turned to bust. From 1915 to 1935, Groveland was the headquarters for the giant Hetch Hetchy project, which dammed the Tuolumne River and sent its water to San Francisco. In the 1960s and 1970s, Pine Mountain Lake was developed into a successful vacation and retirement community. Over the years, local residents have contributed to the development and support of Yosemite National Park tourism, making it the "Gateway to Yosemite."