surface, is located by Jezioro Drużno, at the state road 22 between Elbląg and Malbork in Raczki Elbląskie, making that terrain the lowest point in Poland. Second in size depression land area is placed around Nowy Dwór Gdański. Surface water has lost its unique character due to impact of human activity. Water does not flow as freely as in other parts of the country, because most of the water is on equal altitude, and in fact its circulation is carried out artificially. (..) Centuries of human activities are visible in the thousands of kilometers of canals and drainage ditches, a dense drainage network, the banking up of the rivers, pumping stations and the formation of a system of polders. In effect, the natural environment underwent such transformation that it would be difficult to find any fragments, which remain unchanged." (B. Augustowski, Żuławy Wiślane, Gdańskie Towarzystwo Naukowe, Gdańsk 1976) References Citations Bibliography Żuławy Wiślane - Informator Krajoznawczy (Demart, Warszawa, 2004 Changes in the area and depth of the depression in Zulawy Elblaskie, Joanna Fac-Beneda, Peribalticum VIII, Gdańskie Towarzystwo Naukowe, Gdańsk 2000 Żuławy Wiślane (Gdańskie Towarzystwo Naukowe, Gdańsk 1976) Pomorze Gdańskie vol.3 - Żuławy Wiślane (Gdańskie Towarzystwo Naukowe, Gdańsk 1966) External links http://www.zulawy.art.pl/zulawy_outline/zulawy_what.html http://home.planet.nl/~farjo001/weichsel_uk.htm http://holland.org.pl/art.php?kat=art&dzial=zul&id=3&lang=en Landforms of Poland Vistula basin Ramsar sites in Poland