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

artificial lake border river canyon carpathian mountains castle dam danube derap eastern europe energy production environmental destruction europe fortress gorge horizontal iron gate landscape narrow narrows national park portile de fier reservoir river river landscape romania ruin serbia shipping southern carpathian mountains trikule valley waterway