sentences:  Underground rivers are often found in this region.The South Zone includes District Saptosari, Paliyan, Girisubo, Tanjungsari, Kecamatan Tepus, Rongkop, Purwosari, Panggang, Ponjong the south, and the southern part Semanu.Gunungkidul regency including tropical area, the topography of a region dominated by karst region area.