Hungary has two large lakes, Balaton (q.v.) or Platten-See, the largest lake of southern Europe, and Ferto or Neusiedler See.
In such manner Johannes Walther (Die Fauna der Solnhofener Platten Kalke Bionomisch betrachtet.
In the middle of Hungary a line of hills rises above the plain, striking from the Platten See towards the northeast, where it merges into the inner girdle of the Carpathian chain.
These hills are largely formed of volcanic rocks of late Tertiary age; but near the Platten See Triassic beds of Alpine type are well developed.