Lost California Treasure

Contra Costa County Treasure Map

Contra Costa County California treasure-history records: buried caches, source links, land-status warnings, field notes, and interactive map links.

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1 Contra Costa County Record

  • Dr. John Marsh Pioneer Cache buried cache · Mt. Diablo Foothills, Contra Costa County · Low probability

    Dr. John Marsh, one of the first American doctors in California, accumulated a massive fortune in gold coins and bullion during the Gold Rush. Distrustful of banks, he buried his wealth in various spots around his.