The national park is named after its two mountains, Mount Semeru (the highest in Java at 3,676 metres), Mount Bromo (the most popular) and the Tengger people who inhabit the area. Mount Semeru also known as Mahameru (“Great Mountain”), is one of Indonesia’s most active volcanoes. What stands out most about this mountain is the fact that it erupts periodically (and very reliably so). Every 20 minutes or so, the volcano belches out a huge cloud of steam and smoke, [...]