The Czech landscape is quite varied. Bohemia, to the west, consists of a
river basin, drained by the
Elbe (Czech:
Labe) and
Vltava rivers. It is surrounded by mostly low mountains such as the
Sudetes with its part
Krkonoše, containing the highest point in the country, the
Sněžka at 1,602 metres (5,256 ft). Moravia, the eastern part, is also quite hilly and is drained predominantly by the
Morava river, but also contains the source of the
Oder (Czech:
Odra) river. Water from the landlocked Czech Republic flows to three different seas: the
North Sea,
Baltic Sea and
Black Sea. The
Czech Republic also possesses
Moldauhafen, a 30,000-square-metre (7.4-acre)
enclave in the middle of
Hamburg docks, which was awarded to
Czechoslovakia by Article 363 of the
Treaty of Versailles to allow the landlocked country a place where goods transported downriver could be transferred to seagoing ships; this territory reverts to
Germany in 2028.