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Jomblang Cave is a vertical cave 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.