Cerna River
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Cerna is a river in Romania.
Cerna has its source on the south-east side of the Godeanu Mountains and flows into the Danube. With a basin of 1433 square km and a length of 84 km, it carves an erosive tectonic valley with numerous gorges, quite deep sometimes. There is a man-made lake on it (Tierna), just before it crosses the Băile Herculane spa.