N 48 40.367 W 118 45.550
The Knob Hill mine is located in Ferry County near Republic.
Knob Hill gold mine was discovered around 1902 and is named after a small domed shaped hill on Eureka Gulch. Active mining development began in 1910 and continued through 1998 when the mine closed.
More than 2 million ounces of gold were recovered, making it the largest gold producing gold mine in the state of Washington. In 1960 it was the third most productive lode-gold mine in the United States.
The Knob Hill mine was an incline shaft mine using a large steel headframe.
Today the massive mill foundation, buildings and retaining walls remain.