Bromo has a height of 2392 meters above sea level is located in four regions, namely Probolinggo, Pasuruan, Lumajang, and Malang. Mount Bromo mesh body shape between valleys and canyons with the caldera or the sea of sand covering some 10 square kilometers.
During the twentieth century, the mountain is popular 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 2010.
Bromo eruption history: 2010, 2004, 2001, 1995, 1984, 1983, 1980, 1972, 1956, 1955, 1950, 1948, 1940, 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.
For residents of Bromo Tengger tribe, Mount Brahma (Bromo), believed to be a sacred mountain. Once a year the community held a ceremony Yadnya Tengger Kasada or Kasodo. The ceremony was held at a temple which is under the foot of Mount Bromo and proceed north to the top of Mount Bromo. The ceremony was held at midnight to early morning every full moon around 14 or 15 in Kasodo (tenth) according to the Javanese calendar.