Lake Hévíz among Rotatorias as well ("Epiphanes brachionus" var. "Spinosus", "Lecane inermis"), which are only present in warm waters. Jenő Ponyi has described the lake's primitive crustaceans in detail. Also a unique "Hydracarina acarus" is said to have found its habitat outside the fence surrounding the lake. The waters are reported to be beneficial to patients suffering from rheumatic diseases and locomotor disorders, among others. There is a thriving health tourism industry in the area. Lake Hévíz Lake Hévíz is located in Hévíz, Hungary, near the western end of Lake Balaton, from Keszthely. It is the largest thermal lake in the world,
Hungary the Alps, "Alpokalja", in the west of the country, the Transdanubian Mountains in the central region of Transdanubia, and the Mecsek Mountains and Villány Mountains in the south. The highest point of the area is the Írott-kő in the Alps, at . The Little Hungarian Plain ("Kisalföld") is found in northern Transdanubia. Lake Balaton and Lake Hévíz, the largest lake in Central Europe and the largest thermal lake in the world, respectively, are in Transdanubia as well. The "Duna-Tisza köze" and "Tiszántúl" are characterized mainly by the Great Hungarian Plain ("Alföld"), which stretches across most of the eastern and southeastern