Three days of steep climbs, crater rims and a sunrise summit at 3,726 m—this Sembalun-to-Senaru trek combines alpine ridgelines, Segara Anak’s crater lake and restorative hot springs. Read on for what to expect and how to prepare.
More ways to explore the area's outdoor wonders
You stand on Sembalun’s high meadow at dawn, cool wind pushing across tall grasses, the volcano’s ridge carving sky into jagged teeth. The first day climbs through open savannah and eroding volcanic scree to the Sembalun crater rim (≈2,639 m), where tents ring the summit ridge and the air smells faintly of sulfur and wet earth.
Difficulty
challenging
Duration
3 days
Fitness Level
Good cardiovascular fitness and strong legs; previous multi-day trekking experience or regular hill training recommended
Wildlife
History
Rinjani is an active stratovolcano and a focal point in Sasak and Balinese culture; Segara Anak lake is considered sacred and sits within a caldera formed by past eruptions.
Conservation
Rinjani sits inside a national park—stick to trails, minimize campfire impacts, and pack out waste to protect fragile alpine vegetation and the sacred lake.
Reserve your spot on the 3D-2N Explore Mount Rinjani - Summit -Lake and Hotspring today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Prepare for the pre-dawn summit push
Plan for a 2:00–6:00 AM ascent—carry a warm layer, headlamp and small snacks to maintain energy during the cold and thin air.
Watch for loose volcanic scree
Use trekking poles and take shorter steps on steep descents to reduce slipping on loose pumice and ash.
Stay hydrated and pace for altitude
Drink regularly and ascend at a steady pace; if you develop severe headache or nausea, descend and seek assistance.
Respect hot spring and lake areas
Avoid soaps and detergents in the lake or springs—use designated bathing spots and pack out any trash.
Sturdy hiking boots
Support and grip for steep volcanic scree and wet rainforest trails.
Insulated jacket (down or synthetic)
Summit and pre-dawn temperatures can drop below freezing; essential for comfort and safety.
Headlamp with extra batteries
Required for the early morning summit ascent and moving around camp at night.
Lightweight trekking poles
Improves balance on loose scree and reduces knee strain on long descents.