Kewu Plain
Kewu Plain, also known as Prambanan Plain or Opak River Valley, is a fertile volcanic plain that lies between the Merapi-Merbabu complex in the north, the Bantul lowlands and Sewu karst limestone range in the south, Bengawan Solo river valley in the east, the Progo River in the west, and Kedu Plain on the northwest. It is located within the Yogyakarta Special Region, Sleman Regency, Klaten Regency, and Solo City (Central Java), Indonesia.