Coso Artifact
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Basic Information

The Coso Artifact is a spark plug found in a lump of rock near Olancha, California on February 13, 1961. One of the people who found it claimed that a geologist told her that the rock it was found in would have taken 500,000 years to accumulate, but the geologist in question has never been found.

See Also


Game and Story Use

  • Finding modern items in rocks "too old to contain them" is a great way of establishing an eerie atmosphere. Especially if one of the items is something one of the player characters is currently wearing…
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