Almaden Quicksilver County Park
21785 Almaden Rd, San Jose, CA 95120, USA
4,163 acres (17 km²) park that includes the grounds of former mercury ("quicksilver") mines. The park is named after the New Almaden Quicksilver Mines, which were named after the mercury mine in (old) Almadén, Spain, and produced mercury that was used to process ore during the Gold Rush.
Location of Almaden Quicksilver County Park