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Segara Anak Lake: A Hidden Natural Wonder Inside Mount Rinjani

By Rhiannon Wilson August 31, 2026

Segara Anak Lake is one of the most beautiful natural wonders in Lombok, situated within the large caldera of Mount Rinjani. It’s called the “child of the sea” for its crescent-moon shape. This crater lake is at an elevation of about 2000 m above sea level and attracts hikers from all over the world for an unforgettable trip.


Around the entire lake, towering caldera walls rise dramatically to the sky. Thousands of years ago, violent lava eruptions shaped this striking landscape. This ancient crater still has fiery forces working underneath it. Today, Mount Barujari still smoulders at the edge of the lake.


Besides its beauty, Segara Anak Lake has something for every kind of traveller. Here it’s more than sightseeing, from soaking in natural hot springs to conquering exhilarating summit climbs. Whether you are an experienced trekker or a first-timer, this hidden gem gives you adventures for a lifetime.


What Is Segara Anak Lake and Why Is It Famous? 


Segara Anak Lake is a fiery lake formed in the caldera of Mount Rinjani at over 2.000 metres above sea level.The reason the lake is so famous is the colour of the water similar to the sea, and in the middle of the lake, there is a small volcano with its majestic appearance. 


Segara Anak Lake spans an area of 11 square kilometres and reaches depths of up to 230 metres. It is also found on the western side of Mount Rinjani, in Lawang Sembalun village in Lombok. Segara Anak Lake is one of the highest lakes in Indonesia that visitors can visit. Visitors can visit this lake for trekking adventures or just a relaxing escape. It has an impressive natural landscape and high altitude.


Activities to Enjoy Around Segara Anak Lake


The shores of the Segara Anak Lake are a well-earned reward for trekkers after a long descent down the crater rim. This crescent-shaped lake, surrounded by towering cliffs and the ever-smoking Mount Barujari, offers experiences you won’t get anywhere else on Lombok. It is not just a resting point after a challenging trek, Segara Anak Lake also offers something memorable for every type of traveller.


There are plenty of fun activities to enjoy around Segara Anak Lake. For example, visitors can relax in natural hot springs or watch the sunrise reflect across the calm waters. Whether you want to capture the perfect sunrise photo or simply rest after a challenging hike, there are many ways to enjoy the area. Therefore, here are some of the best things to do near Segara Anak Lake. 


Soaking in Hot Springs


Hikers can find natural hot springs around the lake that are popular after a long trek. The springs are heated by volcanic eruptions from nearby Mt Barujari. The warm water is a great way to relax after a long day of travel. It helps to calm sore muscles, and also to give a kick of energy before hikers continue on their way.  


Fishing


Tilapia and carp are some of the fish found in Segara Anak Lake. Anglers and hikers can take a rest and relax at the lake. It’s a great way to chill after a long trek. Many hikers fish at dawn or dusk when fish are more active near shore. This simple activity creates a special memory for their trip. 


Climbing Mount Barujari


Mount Barujari is a small volcano inside Rinjani’s crater, near Segara Anak Lake. This lava cone offers an exciting challenge for trekkers seeking a trip. Reaching the summit also provides stunning views of the lake, crater walls, and nearby landscapes. Therefore, this destination is ideal for travellers who want a memorable trekking experience. 


Photography and Sightseeing


The lakes are the perfect place for travellers to take plenty of beautiful photographs. The lake is surrounded by scenic spots where tourists can take beautiful pictures. Mount Rinjani looms up above the lake, an impressive backdrop. The quiet water reflects the crater walls, adding to the magic of every shot. Hence the lake has become a favourite place for nature photographers and trip lovers. 


What Are the Best Trekking Routes to Segara Anak Lake? 


There are two major trekking routes to reach Segara Anak Lake Lombok, Senaru and Sembalun routes. These places are a bit more difficult to get to, because they are in the heart of Mount Rinjani. Both routes provide spectacular scenery, from tropical rainforests to savannas and dramatic crater landscapes. The best trekking routes to Lake Segara Anak are:

  • Senaru Route: This route is ideal for beginners as it offers a gentler terrain. The journey usually takes about two days to reach the lake.

  • Sembalun Route: The route is shorter but steeper than the Senaru route. Experienced hikers often choose this route to save time.


Best Time to Visit Segara Anak Lake  


The timing of your climb is very important to make sure that you have a safe and enjoyable time. The best time to climb Mount Rinjani Segara Anak Lake is in the dry season from April to November. This is a more stable time weather-wise and the trekking paths are considerably safer than in the rainy season. The Rinjani area experiences much less rain during the dry season. 


This means the trails are less muddy and slippery, and the risk of landslides is lower. This means clearer skies for the climbers with spectacular sunrise and sunset views. In addition, you can more clearly see the mesmerising panorama of Segara Anak Lake without the presence of thick fog. In addition, mornings usually offer the calmest weather conditions on the crater rim, regardless of the month you choose. 


Plan your next trek to Segara Anak Lake with the Rinjani Trekking Center!


Visiting Segara Anak Lake requires adequate preparation due to the challenging trekking trails and unpredictable weather conditions. So, the Rinjani Trekking Center helps the traveller to have a safer and more comfortable journey. Visitors can look forward to spectacular views of Mount Rinjani and the chance to enjoy unforgettable trekking adventures, supported by expert local guides, well-planned routes and reliable assistance.

And Rinjani Trekking Center has the trek for everyone from first time hikers to experienced trekkers. They pick important things like the routes they take and how they set up their campsite to make the trip more comfortable. Tourists can enjoy the beauty of Lake Segara Anak and take unforgettable memories of Lombok.

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