There are many climbing options you can choose, from a few-hour hike to a challenging multi-day hike, depending on your health and goals. 

If you want an easy and quick trip, Mount Bromo, located in Bromo Tengger Semeru National Park in East Java, is a perfect spot for solo travelers and families alike. With great views and relatively easy access, you can choose to climb early in the morning for a spectacular view of the mountain top at sunrise.

The island of Flores might be most famous for its Komodo dragons, but Kelimutu is an otherworldly experience that should definitely be on your list of things to do while in Indonesia. In the case of Kelimutu, it’s not so much the volcano that is worth the visit but the three mysterious color-changing lakes within the crater.

For those who prefer more challenging hikes, Gunung Agung at 3,142 meters above sea level in Bali is a place not to be missed. There are two hiking routes to the top: the first starts from Pasar Agung Temple and takes three to four hours, and the second starts from the sacred Besakih Temple and takes five to seven hours.

In addition, Mount Ijen in Banyuwangi is home to the world’s largest crater acid lake. If you intend to climb this mountain, the best time is late at night so that when you reach the top of the mountain and witness the ghostly blue flames burning from the acid lake.

According to khiri.com