Polje

A polje (/ˈpɒljə/; Serbo-Croatian: [pôʎe]), also karst polje or karst field, is a large flat plain found in karstic geological regions of the world, with areas usually 5 to 400 km². The name derives from the Slavic languages and literally means 'field', whereas in English polje specifically refers to a karst plain or karst field.