1. Large flat surface in karst formed by erosion and corrosion [20]. 2. A plain on which closed depressions, subterranean drainage, and other karst features may be developed. Also called karst plateau [10]. Synonyms: (French.) plateau karstique; (German.) Karstebene, Karstrandebene, Korrosionsflache; (Greek.) karstikon pedhion; (Italian.) piano carsico; (Russian.) karstovaja ravnina; (Spanish.) llanura karstica; (Turkish.) karst ovasi; (Yugoslavian.) krska zaravan, povrs, kraski ravnik. See also marginal polje.