Buried Treasure In California Seven Places To Search Buried treasure in California exists throughout the State. There are ghost towns that hold treasure. Outlaw caches, and lost, gold and silver mines dot the State. Treasures buried by family members are also hidden here. However, to find them, you need more information.
Opal Hill Mine Mule Mountains California. By Jim Bremner. Tucked deep into the Mule Mountains not far from Palo Verde is the Opal Hill Mine. Opal Hill is well known for its beautiful and rare fire agate, opal eggs and quartz crystals. When one thinks of a mine, images of .