The Danube River flowing through the Kazan Gorge in the Iron Gates Region between Serbia and Romania, Europe

A rock sculpture of Decebalus, last prince of the Dracinians, on a hillside in the Kazan Gorge area of the Danube River, Romania, Europe

King Decabalus Rock Carving, Danube Gorge, Romania, Europe

A view of the Kazan Gorge from a ship cruising on the Danube River between Serbia and Romania, Europe

Trajan's Plaque, a marble Roman plaque on the banks of the Danube River in the Kazan Gorge region of the river, Serbia, Europe

Mraconia Monastery, Danube Gorge, Romania, Europe

View from Eichfelsen Rock into Danube Gorge and Werenwag Castle at sunset, Upper Danube Nature Park, Swabian Alps, Baden-Wurttemberg, Germany, Europe

View over Danube Gorge to Wildenstein Castle, Upper Danube Nature Park, Swabian Alps, Baden-Wurttemberg, Germany, Europe

View from Eichfelsen Rock into Danube Gorge and Werenwag Castle, Upper Danube Nature Park, Swabian Alps, Baden-Wurttemberg, Germany, Europe

View from Eichfelsen Rock into Danube Gorge at sunrise, Upper Danube Nature Park, Swabian Alps, Baden-Wurttemberg, Germany, Europe

Weltenburg Narrows (Danube Gorge), near Weltenburg Abbey, Bavaria, Germany, Europe

Morning mood at the Danube gorge, Weltenburg abbey, Bavaria, Germany

Hart's-tongue fern (Asplenium scolopendrium), Leptosporangiate ferns (Polypodiopsida), striped ferns (Aspleniaceae), Finstertal, gorge forest, Beuron, Upper Danube nature park Park, Baden-Wuerttemberg, Germany, Europe

Danube Gorge near Weltenburg (Donaudurchbruch bei Weltenburg) and Weltenburg Abbey in early spring, Weltenburg Narrows, Bavaria, Germany, Europe

Weltenburg Abbey, the Danube Gorge between Kelheim and Weltenburg, rocks, Danube River, Bavaria, Germany, Europe

Danube Gorge near Weltenburg (Donaudurchbruch bei Weltenburg) and Weltenburg Abbey in early spring, Weltenburg Narrows, Bavaria, Germany, Europe

Danube river, paddle boats, Obere Donau Nature Park, Baden-Wuerttemberg, Germany, Europe

Danube Gorge near Weltenburg (Donaudurchbruch bei Weltenburg) and Weltenburg Abbey in early spring, Weltenburg Narrows, Bavaria, Germany, Europe

Kayaking at the Danube Gorge on the Danube River near Kelheim, Bavaria, Germany, Europe

Iron Gate, Portile de Fier, gorge of river danube through the southern carpathian Mountains, a national park on the serbian and romanian side of the river,The Monastery Mraconia in the Cazanele MiciEurope, Eastern Europe, Romania

The Danube Bend near Visegrad, left the Pilis Mountains, right the Western Carpathian Mountains Europe, East Eruope, Hungary

Iron Gate, Portile de Fier, gorge of river danube through the southern carpathian Mountains, a national park on the serbian and romanian side of the river. A dam downstream of the gorge holds also the same name Iron Gate and has created an artifical lake of about 130 km length, reaching nearly upstream to Beograd. The castle of Trikule is now submerged in the artificial lake, Europe, Eastern Europe, Romania