Pine Grove, Amador County, California
Pine Grove is an unincorporated community in Amador County, California. The town sits at 2,499 feet (757 m) above sea level and the current population is approximately 2,100. It is located at 38°23′49″N 120°38′36″W / 38.3969°N 120.6433°W, along California State Route 88.
The current boundaries of Pine Grove include the former mining towns of Clinton and Irishtown. The town also is home to Indian Grinding Rock State Historic Park.
Clinton
Clinton was the center of a placer mining community during the 1850s and of quartz mining as late as the 1880s. This town once decided Amador County elections as its votes were always counted last. Clinton is registered as California Historical Landmark #37.
Irishtown
This was an important stopping place for emigrants on their way to the southern mines. The first white settlers on this spot found it a "city of wigwams," and hundreds of mortars in the rocks testify that this was a favorite Indian camping ground. Irishtown is registered as California Historical Landmark #38.