The eruption of Bromo and the Big 30 Year One

Vivanews.com. During the 20th century, the mountain is famous as a tourist it erupted three times, with regular time intervals, namely 30 years. The biggest eruptions occurred in 1974, while the last eruption occurred in 2004.
History Bromo eruption occurred in 2004, 2001, 1995, 1984, 1983, 1980, 1972, 1956, 1955, 1950, 1948, 1040, 1939, 1935, 1930, 1929, 1928, 1922, 1921, 1915, 1916, 1910, 1909 , 1907, 1908, 1907, 1906, 1907, 1896, 1893, 1890, 1888, 1886, 1887, 1886, 1885, 1886, 1885, 1877, 1867, 1868, 1866, 1865, 1865, 1860, 1859, 1858, 1858 , 1857, 1856, 1844, 1843, 1843, 1835, 1830, 1830, 1829, 1825, 1822, 1823, 1820, 1815, 1804, 1775, and 1767.
Mount Bromo has a height of 2392 meters above sea level (DPL) located in four districts, namely Probolinggo, Pasuruan, Lumajang, and Malang. Mount Bromo mesh topography between the valley and the canyon with a caldera or a sea of sand covering some 10 square kilometers. Mount Bromo has a crater with a diameter of about 800 meters (north-south) and 600 meter (east-west). While the danger area of a circle with a radius of 4 kilometers from the central crater of Bromo.Bromo is one of the strato volcano type A and is located in the Tengger Caldera. This is the youngest volcano in the ranks of the Tengger caldera, are like Mount Widodaren, Chair, Segorowedi, and Shell.Tengger Caldera itself measuring 9 x 10 kilometers, surrounded by steep cliffs with a height of 50 to 500 meters. Mountain range in the caldera surrounded by volcanic rocks Ancient Tengger mountain. Northern caldera floor is composed of sandstone, while the east and south of the caldera is dominated by grasses. Mount Bromo can be achieved through two ways, namely through the trajectory Probolinggo, Sukapura, Ngadisari to Cemoro Lawang which is the Sand Sea caldera wall that can be carried by vehicles, then followed by a path through the sea of sand.Climbing to the peak and ridge of the crater can be done easily via the staircase wall is available. The second path is through Pasuruan, Tosari, Ravine Munggal, Ocean Sand until Bromo stairs.In addition to providing disaster impacts in the event of volcanic activity at Bromo, the positive side existence of these volcanoes also can we see a resource inventory of the volcano, like a natural tourist attraction.