Posts Tagged ‘Coso Mountains’

Spark Plug Found in 500,000-Year-Old Rock

The Coso ‘Spark plug’ is one of the most interesting and anomalous artifacts ever discovered. By Locklip Its story begins one February morning in 1961, when the owners of a gem shop were out looking for new exhibits in the Coso Mountains of Eastern California. Little did they know that, among the geodes they collected […]

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