hills out of the plateau. After massive 1876 floods, local authorities began the construction of the stony levee along the Danube's bank. Levee, a kilometer long, was finished in 1889. Today it appears that Zemun is built on several hills, with passages between them turned into modern streets, but the hills are actually manmade. The Danube bank in the north is mostly marshy, so the settlements are built further from the river (Batajnica) separated from it by hillocks (up to ). The city of Zemun itself was built right on the bank, above sea level. These are points of the Zemun loess plateau, an extension of the Syrmia loess plateau, which continues into the crescent-shaped Bežanijska Kosa loess hill on the south-east. The yellow loess is thick up to 40 meters and very fertile, with rich, grass-improved, humus chernozem. The uninhabited river islands of Great War Island and Little War Island on the Danube, also belong to the municipality Zemun, too. Loess cliff "Zemun" was protected by the city on 29 November 2013. It consists of the very steep right bank of the Danube and is a typical example of the dry land loess. There are four distinguished loess horizons and four horizons of the fossil earth. The horizons developed during the warmer intervals of the glacials. Loess cliff is estimated to be 500,000 years old. The vertical cliff is high, it is exposed and barren, and the protected area covers . It was described for the first time in 1920 by Vladimir Laskarev. Another exposed section of the same loess ridge, Kapela ridge in Batajnica, has also been protected as a separate natural monument. Kapela is older though, originating from some 800,000 years ago. In September 2018, Belgrade's mayor Zoran Radojičić announced that the construction of a dam on the Danube, in the Zemun-New Belgrade area, will start soon. The dam should protect the city during the high water levels. Such project was never mentioned before, nor it was clear how and where it will be constructed, or if it's feasible at all. Radojičić clarified after a while that he was referring to the temporary, mobile flood wall. The wall will be high and long, stretching from the Branko's Bridge across the Sava and the neighborhood of Ušće in New Belgrade, to the Radecki restaurant on the Danube's bank in the Zemun's Gardoš neighborhood. In case of emergency, the