The Sympleʹgadēs at the entrance of the Euxine Sea. Said to close together when a vessel attempted to sailbetween them, and thus crush it to pieces. Cyanĕan means dark, and Symplegădēs means dashers together.
“Here are those hard rocks of trap, of a greenish-blue, coloured with copper, and hence called the Cyanean.”—Olivier.
· 
· 