The journey to get to the bottom of Jomblang Cave (Goa Jomblang local said) are indeed exhausting. Vertical steep path to reach the bottom of the Jomblang Cave requires bravery, especially for first timers. The cave horrible history indeed scares the local people. Many eerie stories come along with it. However, when we reached the bottom of the cave, all the fatigue and fear will be replaced by a sense of awe of the beauty of Goa Jomblang.
Jomblang is one of hundreds of cave complex in Gunungkidul (40 km from Yogya city) that becomes well known because of its uniqueness. Jomblang Cave is a vertical cave with dense ancient forest below. The characteristics which diametrically 50 m wide with vertical sides varies between 60-80 meters. Because getting enough sunlight, at the bottom some trees grow exuberantly like an underground forest and on karst wall grow shrubs.
When we reach the bottom of the cave, we can take a rest for a while in a cubicle from natural phenomenon. After sort resting, explorers can continue the journey by tracing the tunnel that connects the Cave Jomblang with other vertical cave named Grubug. The tunnel is quite wide with a length of about 500 m. Is not difficult to pass the tunnel because there is a stone passageway. The both of cave is a cave that type of combination of vertical and horizontal cave.
If we can reach the bottom of Grubug Cave at 11.00 am - 01.00pm, the views of the sun through the eternal darkness at the bottom of the Cave Grubug would be so amazing. The ray has touched a number of stalactites and stalagmites formed by dripping water over thousands of years. Sunlight broke into the mouth of Grubug cave and one large stalagmite cave located at the bottom. On the north side of the huge stalagmites, there is the river flow that comes from Kalisuci.
Jomblang and Grubug cave located in Semanu district, Gunugkidul Regency, 50 km southeast Yogyakarta, about 10 km from Wonosari (the capital of Gunungkidul regency). We suggested To reach Jomblang cave with use private transportation vehicle or motorcycle and will take about 2 hours drive from the city of Yogyakarta. Location of the cave was in middle of local plantation by the way is quite challenging with rocks along the road to the location of the cave.