About Ulubelu
Ulubelu is a caldera rising to 849 meters (2,786 feet) in Indonesia's Sunda-Banda Volcanic Regions. No historical eruptions have been recorded, though the volcano is classified based on geological evidence of past activity.
Geography & Climate
Ulubelu is located in Indonesia, within the Sunda Volcanic Arc of the broader Sunda-Banda Volcanic Regions. Situated at 5.33° S, 104.59° E in the Southern Hemisphere, the volcano lies within a tropical climate zone. With a summit elevation of 849 meters above sea level, Ulubelu is a moderately sized peak that remains accessible to hikers and researchers for much of the year. The volcanic landform is characterized as a caldera, which describes the physical shape and structure of the volcanic edifice as observed from the surface.
GVP Reference Summary
Ulubelu is an elliptical, 4-km-long, volcano-tectonic depression in SE Sumatra. The age of its latest eruptions is not known, although solfataric areas, mud volcanoes, and hot springs occur at several locations. Thermal areas are aligned NE of and parallel to the Great Sumatran Fault.
— Smithsonian Institution, Global Volcanism Program
0 Recorded Eruptions
No eruption records available for Ulubelu.
Real-Time Data
USGS Alert Level
Thermal Anomalies
Frequently Asked Questions About Ulubelu
Is Ulubelu an active volcano?+
Ulubelu is not currently classified as active. Its activity evidence is listed as "unknown." No recorded eruptions have been documented. However, no volcano is ever considered permanently extinct.
How high is Ulubelu?+
Ulubelu has a summit elevation of 849 meters (2,786 feet) above sea level. At 849 meters, it is a relatively low-elevation volcano.
What type of volcano is Ulubelu?+
Ulubelu is classified as a Caldera. Calderas are large volcanic depressions formed when a volcano erupts so powerfully that its magma chamber collapses, creating a basin that can be kilometers wide. They are often sites of some of Earth's largest eruptions.
Where is Ulubelu located?+
Ulubelu is located in Indonesia, in the Sunda-Banda Volcanic Regions. More specifically, it lies within the Sunda Volcanic Arc. Its exact coordinates are -5.334° latitude, 104.590° longitude.
Is it safe to visit Ulubelu?+
Ulubelu can generally be visited, but as with any volcano, visitors should check local conditions and any advisory notices before traveling. Indonesia may have specific regulations for accessing volcanic areas. Guided tours are often the safest and most informative way to experience a volcano.

