Szigetköz is a small region bordered by Danube (Old Danube) and Moson Danube. The largest island of Hungary, with an area of 375 km2. It is 52,5 km long and 6-8 km wide on average. It can be divided into 2 main parts: the upper and lower Szigetköz. It is at an altitude of between 110 and 125 m.