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"Copperhead" was a term given to Northern people who sympathized with the south and the southern states' right to secede from the Union.
The two dots act as false eyes to help the copperhead appear even larger and fiercer that it already is.
No a copperhead snake does not rattle.
Copperhead Road is in Johnson County, Tennessee.
The duration of Copperhead - film - is 1.5 hours.