Climbing Rinjani, a Guide to Segara Anak Crater Lake

Mount Rinjani in Lombok, West Nusa Tenggara, is Indonesia's second-highest volcano at 3,726 metres. Inside its caldera lies Segara Anak lake and an active young cone, Mount Barujari.

Popular routes

• Sembalun – open savanna, the favourite route to the summit.
• Senaru – through dense tropical forest, often used for the descent or to reach the lake.

Treks typically last 2 to 4 days, depending on whether you go to the crater rim, the lake or the summit.

Essential preparation

• Register through the national park's official system and use licensed guides and porters.
• Train for several weeks beforehand, especially leg endurance.
• Bring a warm jacket—pre-dawn temperatures at the summit can be very cold.
• Trails are usually closed temporarily during the peak rainy season; check official announcements from the Rinjani National Park office.

Monitor the Mataram (Lombok) forecast on our Weather page a few days before you go.