The Prahu stratovolcano was truncated by a large Pleistocene caldera and then filled by parasitic cones, lava domes, and craters which is 120 °C (248 °F).

Toxic volcanic gas has caused fatalities and is a hazard at several craters.

On 20 February 1979, 149 people died of gas poisoning in Pekisaran Village on the plateau near the Sinila Crater.

[2] The area is also home to a major geothermal project.

This Central Java location article is a stub.