flood defense in budapest: rubber and sandbag barricades shield a subway vent from danube

architecture barricade barricades block boris budapest city cityscape crisis response danger danube defense disaster emergency environment flood control scene hungary infrastructure logistics metro prevention protection rising water river riverbank rubber safety sandbags stone storm stormwater street view streets subway urban life vent wall level weather september 2024: budapest: sandbag shield flooding #39aph39#boris#39aph39# people