Bormo Caldera is the youngest caldera from well-known Tengger Caldera a volcanic massif extending from Semeru volcano with 16 km width. The massive Tengger volcanic complex dates back to about 820,000 years ago and consists of five overlapping stratovolcanoes, each truncated by a caldera. The volcano has summit elevation 2329 meter, latitude: 7.942°S and Longitude: 112.95°E 112°57'0"E last eruption was on 2004
An overlapping cluster of post-caldera cones was constructed on the floor of the Sandsea caldera within the past several thousand years. The youngest of these is Bromo, one of Java's most active and most frequently visited volcanoes. Bromo is the most favourite and most visited by the tourists.
Source: http://www.antor.org/indonesia/bromo-and-ijen.html
