Java Volcano Trekking: Mount Ijen, Mount Semeru and Mount Merapi in 2026
Java is home to over 40 active volcanoes making it one of the most geologically exciting places on Earth.
Mount Ijen — The Blue Fire Volcano
Start at 1 AM for a 2-hour hike to see the electric-blue sulfur flames — one of only two places on Earth. The turquoise acidic lake at the summit is the world’s largest.
Mount Semeru — Java’s Highest Peak
At 3,676 meters, Semeru is a 2-day trek. Camp at Kalimati and push for the summit before dawn.
Mount Merapi — The Most Active
Trek the Selo Route (4-5 hours) or take a Jeep tour through the 2010 eruption-affected villages.
