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Jomblang Cave, Central Java, Indonesia.jpg


A 40m deep single-shaft with a diameter of 50 m formed by dissolution and collapse of 15-2 million old limestone. This occurred after the limestone was uplifted from the sea floor about 1.8 million years ago. The bottom of the collapsed sinkhole is connected with a horizontal passage that ends at Grubug Cave. Grubug Cave, a single shaft of about 90m, is the deepest vertical cave in Java Island. The phenomenon of Grubug underground river and the upward view from the bottom is very amazing

Rp 800,000 / p (min 2 pax)

Leave : 07:00
Include : Transport, Entrance fee, & Safety Equipment

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