Goa Jomblang and Grubug
)This vertical cave requires skill, experience, equipment, and courage to explore.
Learn and practice single rope technique before going into the cave mouth.
To reach the bottom of the cave, the adventurers must conquer the slippery vertical fall.
Jomblang is actually only part of a large cave system through the area of Gunung Kidul, and there is a pitch black tunnel that will lead you to the adjacent Grubug Cave, with the famous 'heaven light'.
***@thiya.ajha**