Whether bubbling with activity, extinct or otherwise, volcanoes are earthshaking testaments to nature's power. Pretend you're a volcanologist for a day and explore the geological wonders of Kawah Sikidang.
You'll have sightseeing choices galore in Central Java. Sikidang Crater is a great place to kick off here, but there are many other worthy spots to consider. Dieng Plateau, Sikunir Mountain, and Telaga Warna are close to the geological phenomenon and will top off your day nicely.