GUNUNG · Indonesia

Gunung Semeru

Gunung Semeru (Mahameru)

Information

Elevation: 3.676 m
Country: Indonesia (ID)
Location / Range: Tengger Mountains, East Java (Bromo Tengger Semeru National Park)
Mountain type: Stratovolcano (active)
Volcanic?: Yes — volcano
Coordinates: -8.1077, 112.9224
Difficulty: Strenuous — a steep and slippery summit push on volcanic sand
Best Season: Dry season; subject to the TNBTS climbing open-and-close schedule
Permits & Rules: Registration and quota with Bromo Tengger Semeru National Park via Ranu Pani; access is often restricted to Kalimati due to eruptions
Hazards: Eruptions and toxic gases, rockfall on the summit trail, steep sliding volcanic sand, extreme cold weather

Description

Mount Semeru, whose highest point Mahameru rises to 3,676 metres, is the tallest mountain on Java and an active stratovolcano. Within Bromo Tengger Semeru National Park in East Java, its trail starts at Ranu Pani and passes the iconic Ranu Kumbolo lake. The summit push to Mahameru is notoriously hard on steep, slippery volcanic sand, and the crater regularly erupts, so climbing follows national-park rules and restrictions.

Gallery

Foto bersumber dari Wikimedia Commons — klik untuk memperbesar & lihat sumbernya.

Routes

Via Ranu Pani

Berat

3–4 hari

Satu-satunya jalur resmi: Ranu Pani → Ranu Kumbolo → Oro-oro Ombo → Kalimati → summit Mahameru menembus lautan pasir.

Route Segments

1

Ranu Pani → Ranu Kumbolo

↔ 10.5 km ↑ 300 m ⏱ 4–5 jam 2.400 mdpl

Trek landai melewati beberapa pos bayangan menuju danau Ranu Kumbolo — area kemah utama & sumber air.
2

Ranu Kumbolo → Kalimati (via Tanjakan Cinta & Oro-oro Ombo)

↔ 5 km ↑ 300 m ⏱ 3–4 jam 2.700 mdpl

Naik Tanjakan Cinta, turun ke padang Oro-oro Ombo, lewat Cemoro Kandang & Jambangan menuju Kalimati — kemah terakhir; ambil air di Sumber Mani.
3

Kalimati → Mahameru (puncak)

↔ 2.5 km ↑ 976 m ⏱ 4–6 jam (summit attack) 3.676 mdpl

Mulai dini hari (±00.00–01.00). Lewat Arcopodo & Kelik, lalu mendaki lautan pasir curam yang melorot. Turun dari puncak sebelum ±10.00 demi menghindari gas beracun Wedus Gembel.

Climbing Experiences

Accounts of climbing Mount Semeru almost always centre on two things: the beauty of Ranu Kumbolo lake — 'a climbers' paradise' — and the brutal summit push to Mahameru over steep volcanic sand, often described as 'two steps up, one step sliding back'. Climbers also note the bitter cold, the sea-of-clouds sunrise, and the importance of respecting safe limits and park schedules since Semeru is still active. The links below come from YouTube vlogs, trip blogs and hiking sites; each is verified reachable before it is shown.

References

The summary above is compiled from the following sources. Click to explore them yourself.