Segara Anak crater lake and the dark cone of Barujari inside Rinjani's caldera

Mountain · North and East Lombok, West Nusa Tenggara

Mount Rinjani National Park

Indonesia's second-highest volcano, with the crater lake Segara Anak and multi-day treks

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Ambient sound · similar settingHimalayan hill-station dawn chorus

Photo: David Wollschlegel (@wollio) / Unsplash

Discover Mount Rinjani National Park

Mount Rinjani rises over northern Lombok, its summit reaching 3,726 metres. Inside its enormous caldera lies Segara Anak, a crescent-shaped lake whose name means child of the sea, and from its waters grows Barujari, a young volcanic cone that still stirs from time to time.

Trekking Rinjani is a serious undertaking, usually done over two to four days with a licensed guide and porters. Paths climb through forest and grassland to crater-rim camps, from which the strongest hikers make a pre-dawn push to the summit for sunrise over Lombok, Bali's Mount Agung and the sea. For those who prefer gentler walks, the villages around the park's lower slopes offer waterfalls, rice terraces and cooler mountain air.

Don’t miss

01Segara Anak, the blue crater lake inside the caldera at around 2,000 m
02The summit at 3,726 m, reached before dawn for sunrise views
03Crater-rim campsites such as Plawangan above Sembalun
04Barujari, the young volcanic cone rising from the lake
05Hot springs near the lake used by trekkers and pilgrims

History & culture

The story of Mount Rinjani National Park

The caldera was formed by the colossal eruption of Samalas, a peak that once stood beside Rinjani, in 1257. Scientists consider it one of the most powerful eruptions of the last two thousand years; it left traces in polar ice and may have cooled the global climate. Barujari has since grown inside the caldera, with eruptions in the 1990s and as recently as 2016.

Gunung Rinjani National Park was established in 1997, and the Rinjani caldera area was recognised as a UNESCO Global Geopark in 2018. For the Sasak people and Lombok's Balinese Hindu community, the mountain and lake are sacred, and pilgrims still make offerings at Segara Anak. After several accidents, including a fatal fall in June 2025, the park authority revised its safety procedures and introduced RFID wristbands, personal tracking devices and a command centre for climbers.

Local life & traditions

The villages around Rinjani are home to Sasak communities whose lives are tied to the mountain, from farming on its fertile slopes to working as guides and porters. Senaru and Sembalun have traditional settlements, and the mountain features in local beliefs and rituals. Food on treks is generally halal and Indonesian in style; tell your operator about dietary needs and plan prayer times around the trekking schedule, which often starts well before dawn.

Things to do

Experience it like a local

The main routes start from Sembalun in the east and Senaru in the north, with other trails at Timbanuh, Tetebatu and Aik Berik. A two-day trek to the Sembalun crater rim gives a taste of the caldera views; longer itineraries add the summit, the descent to Segara Anak and its hot springs, and a crossing to Senaru.

All climbers must register through the park's eRinjani booking system, and most go with a trekking organiser who supplies a guide, porters, tents and food. Non-trekkers can enjoy the waterfalls near Senaru or the farming valley of Sembalun at the foot of the mountain.

When to go

Rinjani is closed to climbers during the rainy season; in 2026 all trails were closed from 1 January to 31 March and reopened in April. The drier months that follow usually offer the most stable weather, though nights at the rim are cold year-round. Late in the dry season, fire risk can lead to restrictions: in September 2026 climbing was limited and some trails closed after forest fires, so always check the current status before booking.

Plan your visit

Verified information

Managing authority: Balai Taman Nasional Gunung Rinjani (Balai TNGR), the Mount Rinjani National Park Office, based in Mataram. Source: megapolitan.antaranews.com ↗
Booking: Climbers must register and book online through the eRinjani app; if a date's quota is full, another date must be chosen. Source: megapolitan.antaranews.com ↗
Trail status (as reported 3 Oct 2026): Sembalun, Senaru, Timbanuh, Tetebatu and Aik Berik trails open; Torean was not among the reopened trails after the September 2026 forest fire. Source: megapolitan.antaranews.com ↗
Seasonal closure: In 2026 all trails were closed from 1 January to 31 March for the rainy season and reopened on 1 April. Source: megapolitan.antaranews.com ↗
Fire restrictions: From 1 September 2026 climbing was temporarily limited under a forestry ministry circular to prevent forest fires; improper use of fire is prohibited. Source: en.antaranews.com ↗

Checked against the sources on 27 October 2026. Opening times and fees can change — confirm before you go.

Travel tips

Book with an established, licensed trekking organiser and confirm guide certification, equipment and emergency procedures.
Only attempt the summit if you are fit and experienced; the final ascent is steep loose scree in the dark and cold.
Pack warm layers, a head torch, gloves and good boots; temperatures at the rim can drop sharply at night.
Carry all rubbish back down and never light fires outside designated arrangements.
Check the park's latest announcements shortly before travelling, as trails can close at short notice.

General guidance from our specialists, not official information.

Around Mount Rinjani National Park: food, markets & places to stay

Sembalun, a high farming valley on the east side, and Senaru on the northern slopes are the main trailhead villages, both with simple guesthouses and homestays. Mataram, the provincial capital, and Lombok International Airport are several hours' drive away, and many trekkers combine Rinjani with the Gili Islands off the north-west coast.