sentences:  Kedu Plain
  
  Kedu Plain, also known as Progo River valley, is the fertile volcanic plain that lies between the volcanoes, Mount Sumbing and Mount Sundoro to the west, and Mount Merbabu and Mount Merapi to the east, roughly corresponds to present-day Magelang and Temanggung Regency of Central Java, Indonesia.Its northern border is limited by hills of Kendal and Mount Ungaran.