Lost California Treasure

Malakoff Diggins State Historic Park

California's largest hydraulic gold mining operation. Blasted away entire hillsides, excavating over 41 million cubic yards of earth and carving out a massive canyon. The resulting environmental devastation led to the historic 1884 Woodruff v. North Bloomfield court decision, which effectively banned hydraulic mining in the US.

Record typelost mine
LocationNorth Bloomfield, Nevada County
Probability indexHigh
Land statusMalakoff Diggins State Historic Park (Restricted; state park, no artifact gathering)
Research coordinates39.3737, -120.9146
SourceNational Register of Historic Places (NRHP #73000418)

Field Research Notes

Explore the park's overlooks to view the massive carved badlands-style canyon. The historic town of North Bloomfield features preserved buildings and mining displays. Panning and metal detecting are strictly prohibited within park limits; do not climb the steep, unstable clay cliffs of the diggings.

Recommended Gear

Hiking boots, Water bottle, Sun hat

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