10 Mountains to Climb in Indonesia With the Most Stunning Views

If volcano hiking is on your bucket list, Indonesia should be your top pick. Sitting at the crossroads of the Australian, Eurasian, and Pacific tectonic plates, this island nation is basically a playground for volcanic adventures.

With around 150 active volcanoes and countless more extinct ones, Indonesia’s peaks are as diverse as they are dramatic. Famous giants like Tambora and Krakatoa still carry the legends of their explosive 19th-century eruptions, but don’t let that intimidate you. Today, eruptions are rare, usually leaving only wisps of smoke and the faint tang of sulphur in the air.

What makes these mountains irresistible is that they’re made to be explored on foot. Hiking and trekking have exploded in popularity lately, and Indonesia is leading the trend with epic trails that wind up and around these fiery giants. Whether you’re a casual hiker or a serious climber, there’s a route for you, each offering panoramic rewards that make every step worth it.

In this guide, we’ve rounded up ten of Indonesia’s best mountains for hiking in 2026. Expect challenging climbs, Instagram-worthy vistas, and the kind of adventure that will make your hiking stories the envy of your friends.

Hike these mountains in Indonesia for a breathtaking experience:

1. Mount Agung, Bali

Image credit: Darren Willman

The highest mountain in Bali, Mount Agung, is 3,142 metres tall and is a spiritually important mountain for the Balinese people, the location of the Mother Temple of Besakih. Those who reach the summit are rewarded with breathtaking panoramic views.

They include rolling rice terraces, the shimmering coastline, and, on clear days, even glimpses of neighbouring islands. The climb offers not only a sense of accomplishment but also a chance to connect with Bali’s natural beauty and spiritual heritage.

2. Mount Batur, Bali

Image credit: Diaa abdelmoneim

Arguably the most popular mountain for hiking in Bali, Mount Batur stands 1,700 metres tall. Its summit overlooks Lake Batur and the rural landscapes that characterise this popular tourist island.

The hike is fairly short, taking about two hours to reach the summit. If you’re spending significant time in Bali, this hike is an excellent activity to do when you get bored of spending time on the beach all day.

3. Mount Kerinci, Sumatra

Image credit: ccdoh1

This is the tallest mountain in Sumatra and the highest volcano in Indonesia. Located within Kerinci Seblat National Park, this mighty mountain can be conquered during a three-day trek.

On the way, you might even spot iconic animals like the Sumatran rhino or the Sumatran tiger. From the summit, you can take in a view that encompasses a rural landscape dotted with fifteen lakes, including Gunung Tujuh Lake, the highest lake in Southeast Asia.

4. Kawah Ijen, Java

Image credit: Stéphane DAMOUR

Kawah Ijen, or Ijen Crater in English, is a super-popular hiking destination in Java, and it’s easy to see why. Hikers go there to see the stunning kilometre-wide crater.

This magnificent crater is filled with crystal-clear sulphur water that emits white smoke during the day and blue flames at night. This natural phenomenon is a real spectacle, but remember that the gases are poisonous. Cover your nose and mouth when you’re near the crater.

5. Mount Kelimutu, Flores

Image credit: Cheloux Magazine

The three coloured lakes at the summit of Mount Kelimutu are arguably the greatest natural highlight in Flores. Each of the three lakes has its own distinct colour, from blue and green to muddy brown and black, the actual colours depending on the season and time.

Just seeing these three magical lakes makes the 20-kilometre hike totally worth it. You can also take public transportation to a parking lot, from where it’s a 30-minute hike to the lakes.

6. Mount Bromo, Java

Image credit: Midori

The greatness of Mount Bromo is known wide and far. Numerous hikers flock to this active volcano to catch the sun rising over an unearthly landscape of volcanoes and barren hills.

The most iconic mountain in Indonesia, this is arguably the epicentre of hiking in Indonesia. It’s by far the most popular volcano to hike. And for good reason—the views are unbelievable.

7. Mount Penanjakan, Java

Image credit: GokuPhoto

Mount Penanjakan lies relatively close to Mount Bromo, also in Bromo Tengger Semeru National Park. This mountain is particularly great because it offers some of the best views of Mount Bromo and its white sulphurous plumes of smoke.

The hike to the summit takes about two hours. Try to get there before sunrise.

8. Mount Merbabu, Java

Image credit: Kondephy

The 360-degree views from Mount Merbabu encompass seven other peaks, creating a panorama that’s worth the hike. It takes more than twelve hours to get to the summit and back down, which is why many hikers opt to camp on the way. 

Hikers are treated to sweeping vistas of verdant valleys, dense forests, and distant mountain ridges that shift in colour as the sun moves across the sky. Strong hikers might be able to do it in a single day, while others choose to break the journey into stages, setting up camp along the way to rest and soak in the scenery at a more leisurely pace.

9. Mount Rinjani, Lombok

Image credit: Ulilzzz

Dominating the landscape on the island of Lombok, Mount Rinjani is 3,726 metres high and is the second-tallest volcano in Indonesia. It’s also one of the most active volcanoes on the island. This is one of the country’s greatest hikes, but it’s not an easy one.

The trek to the top and back takes three or four days. There are starting points in each of the twenty-something villages around the mountain. On the way, you can enjoy wonderful forest scenery and waterfalls, while at the top, the Segara Anak is the star attraction, a blue crater lake shaped like a crescent.

10. Puncak Jaya, Papua

Image credit: Olof Sundström & Martin Letzter

Towering 4,884 metres above the landscape of Papua, Puncak Jaya, also known as the Carstensz Pyramid, is the highest mountain on the Australian continent. It’s one of the Seven Summits of the World, which encompasses the highest peaks on the seven continents.

The highest point between the Himalayas and the Andes, Puncak Jaya, is also the world’s tallest island mountain. Beware, though, that ascending it is only suitable for experienced and highly skilled climbers.

Also read: 10 Mountains in Southeast Asia with the Most Incredible Views

Peak Your Adventure

No matter which volcano you choose to tackle, one thing is certain: Indonesia’s mountains promise more than just a workout. They deliver awe-inspiring views, a dash of adventure, and stories you will be telling long after the hike. So lace up your boots, grab your backpack, and get ready to peak your adventure because these trails are calling and you do not want to miss out.