East Java, Indonesia, -8.11°S / 112.92°E
Current status: erupting (4 out of 5)
Semeru, the highest volcano on Java, and one of its most active, lies at the southern end of a volcanic massif extending north to the Tengger caldera. Semeru, a favourite mountain trekking destination, has been in almost continuous eruption since 1967. It is known for its regular ash explosions that typically occur at intervals of 10-30 minutes.
Semeru volcano eruptions: 1818, 1829, 1830, 1832, 1836, 1838, 1842, 1844, 1845, 1848, 1849(?), 1851, 1856, 1857, 1865, 1866(?), 1887, 1887, 1888, 1889-91, 1892, 1893, 1893-94, 1895, 1896, 1897, 1899, 1899, 1900, 1901, 1903, 1904, 1905, 1907, 1908, 1909-10, 1910-11, 1911, 1912, 1913, 1941-42, 1945, 1946, 1946-47, 1950-64, 1967-ongoing
Latest nearby earthquakesNo recent earthquakes
BackgroundThe steep-sided volcano, also referred to as Mahameru (Great Mountain), rises abruptly to 3676 m above coastal plains to the south. Gunung Semeru was constructed south of the overlapping Ajek-ajek and Jambangan calderas. A line of lake-filled maars was constructed along a N-S trend cutting through the summit, and cinder cones and lava domes occupy the eastern and NE flanks. Summit topography is complicated by the shifting of craters from NW to SE. Frequent 19th and 20th century eruptions were dominated by small-to-moderate explosions from the summit crater, with occasional lava flows and larger explosive eruptions accompanied by pyroclastic flows that have reached the lower flanks of the volcano.
Erupting Semeru volcano at night (March 2004) - a small explosion expels incandescent bombs that roll down its southern flank. (Photo: Tom Pfeiffer)
The growing lava dome of Semeru volcano in early November 2015. (Photo: Andi / VolcanoDiscovery Indonesia)
Eruption at Semeru volcano (East Java) in the golden morning light (Photo: Tom Pfeiffer)
Golden morning light hits the upper slopes and parts of the ash plume from Semeru volcano. (Photo: Tom Pfeiffer)
See also: Sentinel hub | Landsat 8 | NASA FIRMS
Semeru volcano tours
Price 3180 €
Price 3120 €
Price depending on nr of people and program
Price depending on nr of persons and itinerary