sentences:  These are classified locally as vertical caves (known as "luweng" in Javanese) and horizontal caves.Jomblang cave ("Luweng Jomblang") and Grubug Cave ("Luwung Grubug") located in the Semanu subdistrict in Kulonprogo, as well as other caves in the area, are well-known to local caving (speleological) groups.Some of the caves are quite long; Cerme cave, for example, has an entrance in Bantul Regency and stretches for quite a distance eastward into Panggang subdistrict in Gunungkidul Regency.