Ijen Crater Trek from Banyuwangi: Sulfur Miners & Blue Fire

The sulfur miners you pass on the way up carry backbreaking loads to fund their families.

A 12–14 hour trek from Banyuwangi to the summit of Mount Ijen, where you'll climb through darkness alongside sulfur miners, reach the rim of one of Earth's largest acidic lakes, and watch the sunrise over the turquoise crater. Private guide, transport, gas mask, headlamp, entrance ticket and coffee break are included. Children from age 6 are welcome; moderate fitness is required.

Step-by-step itinerary

Trek to Ijen Crater and sunrise view

• Ascend Ijen volcano summit in darkness
• Meet sulfur miners on the way
• Arrive at sunrise spot
• View turquoise acidic lake and surroundings

The Experience

The trek starts before dawn. Your guide picks you up from Banyuwangi and drives to the trailhead, where you begin climbing in darkness with a headlamp. Along the way, you'll encounter the sulfur miners—workers who carry bamboo baskets loaded with 80–100kg of sulfur down the mountain in a single trip, their shoulders bearing the weight of the load. The climb is steady and the air grows thinner as you gain elevation. A coffee break partway up gives you a moment to rest before the final push to the rim.

Once you reach the summit, you head straight to the sunrise spot. When the light breaks, the view opens across the Ijen plateau: a massive crater filled with turquoise water—one of the biggest acidic lakes on Earth. The color is vivid and strange, a result of the sulfur and minerals in the water. From the rim, you can see the blue fire (a natural phenomenon caused by sulfur combustion) from a safe distance of about 1km away. All safety equipment—gas mask and headlamp—is provided, and your guide stays with you throughout to explain what you're seeing and manage the conditions.

The descent takes several hours. Your legs will feel the work by the end, and the full day—12 to 14 hours from pickup to return—is physically demanding. This is not a casual walk. You need moderate fitness to manage the climb, the altitude and the early start. Weather plays a role: clear skies reveal the crater's full beauty, but clouds can obscure the view. The trek is not recommended for travelers with heart conditions, back or spinal problems, asthma, or poor cardiovascular health. Pregnant travelers should not go. Children from age 6 can join if accompanied by an adult.

What’s included

• Private guide in English and private transport with driver and fuel.
• entrance ticket to Ijen Crater.
• gas mask and headlamp for safety.
• bottled water and coffee break during the climb.
• health certificate fees.

Good to know

Moderate physical levelNot for pregnant travelersNot for heart conditionsNot for back problemsInfants must sit on laps

Operated by East Java Paradise Travel

Is this one for you?This trek demands moderate fitness and several hours of sustained climbing in darkness and altitude—it suits travelers who are physically prepared for a demanding mountain hike and want to witness the sulfur miners' work and the crater's turquoise water at sunrise. If you have heart, back or spinal conditions, asthma, or poor cardiovascular health, this trek is not safe for you.

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Top questions

What is the blue fire at Ijen Crater?

The blue fire is a natural phenomenon caused by sulfur combustion on the crater's slopes. You'll see it from the rim at a safe distance of about 1km away; tourists are not allowed to descend into the crater itself.

How much weight do the sulfur miners carry?

The sulfur miners carry bamboo baskets loaded with 80–100kg of sulfur in a single trip down the mountain, making multiple journeys each day to extract and transport the mineral.

What time does the trek start and how long does it take?

Your guide picks you up before dawn so you can begin climbing in darkness and reach the sunrise spot on time. The full trek, including transport and coffee break, takes 12 to 14 hours from pickup to return.

Is the trek safe if I have health concerns?

The trek is not recommended for travelers with heart conditions, back or spinal injuries, asthma, or poor cardiovascular health. You need at least moderate physical fitness. A gas mask and headlamp are provided, and your guide manages safety throughout.

Can children do this trek?

Children from age 6 can join the trek if accompanied by an adult. Infants must sit on an adult's lap during transport. The climb is physically demanding, so children should be comfortable with several hours of steady hiking.

What happens if the weather is bad on the day of the trek?

Clear weather is needed to see the crater's turquoise water and the surrounding plateau. Clouds can obscure the view. Your guide will assess conditions on the morning of the trek and manage the experience accordingly.