Bulmore Park, Almaden Rd and Almaden Way, New Almaden,
CA ,
USA
California State Historical Marker
Here, along Arroyo de los Alamitos Creek, Luís Cabolla and Antonio Suñol did the first mining in California as they worked New Almaden ore in their arrastra. In constant production since 1845, the mine has produced more than a million flasks of quicksilver valued at over $50 million.