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.

Entry Fees & Tickets

🕒 Riset terakhir: 23 Juni 2026 pukul 09.00 WIB

Pendakian Semeru wajib SIMAKSI dengan tiket dibeli & dibayar secara online di situs resmi TNBTS (bookingsemeru.bromotenggersemeru.org). Booking dibuka H-30 sampai H-2 sebelum tanggal naik; kuota dibatasi 200 orang/hari dan durasi maksimal 2 hari 1 malam. Per Juni 2026 pendakian HANYA diizinkan sampai Ranu Kumbolo — puncak Mahameru dan Kalimati masih ditutup karena status vulkanik. Komponen tarif resmi WNI sekitar Rp20.000 (hari kerja)/Rp30.000 (hari libur) tiket masuk + hiking Rp20.000 + camping Rp5.000/hari + asuransi Rp4.000/hari; untuk WNA tiket masuk Rp200.000/hari + asuransi Rp5.000/hari. Total per orang WNI berkisar Rp73.000-Rp93.000 (2 hari) dan WNA sekitar Rp435.000. Setiap rombongan (2-10 orang) wajib didampingi pemandu resmi.

Tiket masuk WNI (hari kerja) Rp20.000 per orang per hari (tarif resmi TNBTS).
Tiket masuk WNI (hari libur) Rp30.000 per orang per hari.
Tiket masuk WNA Rp200.000 per orang per hari (hari kerja maupun libur).
Biaya hiking Rp20.000 per pendakian (komponen terpisah).
Biaya camping Rp5.000 per hari.
Asuransi WNI Rp4.000 per hari, WNA Rp5.000 per hari — wajib, sudah masuk pembayaran tiket online.
Total per orang (WNI, akumulasi) Sekitar Rp73.000 (2 hari kerja), Rp83.000 (1 hari kerja + 1 libur), Rp93.000 (2 hari libur), sudah termasuk tiket, hiking, camping, dan asuransi.
Total per orang (WNA, akumulasi) Sekitar Rp435.000 untuk paket 1 hari kerja + 1 hari libur, sudah termasuk asuransi.
Sistem booking Tiket WAJIB dibeli & dibayar online di situs resmi TNBTS (bookingsemeru.bromotenggersemeru.org). Pendaftaran dibuka H-30 hingga H-2; tidak melayani pendaftaran on the spot.
Kuota & durasi Maksimal 200 pendaki per hari, durasi maksimal 2 hari 1 malam, jam mulai naik paling lambat 15.00 WIB. Tenda hanya boleh di kawasan Ranu Kumbolo.
Pemandu (guide) wajib Setiap rombongan 2-10 orang wajib didampingi pemandu lokal resmi; tarif sekitar Rp400.000-Rp600.000 per hari.
Porter (opsional) Jasa angkut barang sekitar Rp350.000-Rp500.000 per hari, kapasitas ~20-25 kg.
Batas pendakian terkini Per 2026 pendakian hanya sampai Ranu Kumbolo; Kalimati dan puncak Mahameru DITUTUP karena aktivitas vulkanik.

Source

Planning & Access

How to reach the trailhead, with transport alternatives.

Malang Basecamp Ranu Pani

Angkot Dari Terminal Arjosari naik angkot jurusan Tumpang sampai Pasar Tumpang. · Sekitar Rp3.000-Rp7.000 per orang.
Jeep Dari Tumpang lanjut jeep ke Ranu Pani (kapasitas maks ~6 penumpang, ~1,5 jam). · Tumpang-Ranupane PP ~Rp1.200.000-Rp1.400.000 per jeep (patungan).
Ojek Ojek motor dari Tumpang ke Ranu Pani sebagai alternatif perorangan. · Sekitar Rp100.000-Rp150.000 per orang.
Truk sayur Opsi paling ekonomis, jadwal terbatas pagi hari (~05.00-07.00 WIB). · Sekitar Rp30.000 per orang.

Patungan rombongan ~6 orang dalam 1 jeep menekan biaya jadi ~Rp200.000-Rp300.000 per orang. Pesan jeep jauh hari.

Surabaya Basecamp Ranu Pani

Kereta Dari Stasiun Pasarturi/Gubeng ke Stasiun Malang, ~2-2,5 jam. · Tiket mulai ~Rp20.000 (ekonomi) hingga ~Rp30.000 (eksekutif).
Lanjutan dari Malang Setibanya di Malang, lanjut angkot ke Tumpang + jeep/ojek ke Ranu Pani. · Lihat rincian biaya rute Malang.

Umumnya pendaki dari Surabaya transit ke Malang dulu, baru lanjut ke Tumpang dan Ranu Pani.

Stay Alert & Safety Tips

Be careful to avoid scammers. Information compiled from climber experiences & trusted sources.

thunderstormWeather Puncak Mahameru dan Kalimati DITUTUP karena aktivitas vulkanik. Kawah Jonggring Saloko mengeluarkan gas beracun (SO2, CO2, H2S) yang tak berwarna & tak berbau; konsentrasi tinggi bisa menyebabkan iritasi, sesak napas berat, hingga kehilangan kesadaran. Patuhi batas pendakian sampai Ranu Kumbolo.
infoInfo Blank 75 adalah zona berbahaya (jurang ~75 meter dengan banyak rekahan akibat longsoran pasir). Banyak pendaki tersesat atau menjadi korban di sini. Jangan keluar dari jalur resmi.
warningRoads Jalan dari Tumpang menuju Ranu Pani terjal, sempit, dan sering rusak/bergronjal — gunakan jeep/kendaraan sesuai dengan sopir berpengalaman, jangan paksakan mobil rendah.
local_activityTouts Waspada calo tiket/jasa di sekitar Tumpang dan Ranu Pani. Tiket SIMAKSI hanya sah lewat sistem booking online resmi TNBTS; jangan beli tiket dari pihak tak resmi.
reportScams Hati-hati oknum yang menawarkan paket/transport/guide tidak resmi dengan harga tidak wajar. Gunakan pemandu resmi dan penyedia jeep terpercaya, sepakati harga & kapasitas di muka.
backpackPickpockets Jaga barang berharga di area ramai (terminal, pasar Tumpang, basecamp) dan saat menitipkan kendaraan, terutama saat antrean registrasi.

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.

Safety Statistics

Aggregated for prevention and awareness — not a casualty list. Read alongside the safety tips below.

Causes of death

Other

💡 The Jonggring Saloka crater at the Mahameru summit emits toxic gases (CO2, SO2, H2S) and 'wedus gembel' (pyroclastic clouds). Do not approach the crater rim or climb the southern side; the gas is heavier than air and pools in hollows when the wind is calm — descend promptly, don't linger at the top.
Source
Other

💡 Semeru has erupted near-continuously since 1967; major eruptions (e.g. December 2021) triggered pyroclastic flows and fatalities nearby. Check the current status on PVMBG/Magma Indonesia, respect the safe-distance recommendation, and never push on when the trail is closed.
Source
Lost / disoriented

💡 'Blank 75' is a 45–75° sand cliff with a roughly 75 m ravine to the right of Arcopodo on the descent from the summit. Many hikers veer right off-route and fall. On the way down, stay on the marked path, never bear right, and avoid descending in fog or darkness.
Source

Notable incidents

1969 Toxic-gas poisoning at the Mahameru summit, 1969

On 16 December 1969, activist Soe Hok Gie and his companion Idhan Lubis died after inhaling toxic crater gas while at the Mahameru summit. This widely documented event remains an enduring lesson: volcanic gas can kill without warning — never rest in hollows near the crater and mind the wind direction.
Source
2021 Major Semeru eruption, December 2021

The 4 December 2021 eruption unleashed pyroclastic flows that caused fatalities and displacement on the slopes and in nearby villages. A reminder that Semeru is an active volcano: any climbing plan must follow the official volcanic status, and the trail can be closed at any time.
Source

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.