Danau volcanic complex: Danau Caldera, Karang, Aseupan- and Pulosari volcano

The Danau volcanic complex is of Plio-Pleistoceneage and formed in a number of eruptive phases, cul-minating in the eruption of the voluminous Banten pumice tuffs =also known as `Bantam’ tuffs) and formation of the large caldera. Andesitic lava and volcaniclastics form the steep northern-eastern rim of the caldera. (Source: Late Quaternary palaeoecology, palynology and palaeolimnologyof a tropical lowland swamp: Rawa Danau, West-Java, Indonesia)

To the south of Danau caldera is Karang volcano. Karang volcano in westernmost Java was constructed SE of the 15-km-wide Pleistocene Danau caldera. Two craters, Kawah Welirang and Kawah Haji, display fumarolic activity and are found on the eastern flanks, which may be of Holocene age (Bronto 1995, pers. comm.). The forested andesitic and basaltic volcano is the highest of a group of stratovolcanoes in the Danau caldera area and lies across a low saddle from Pulosari volcano. (Source: Global Volcanism Program)

To the South-West of Karang is Pulosari. The basaltic-to-andesitic Pulosari stratovolcano at the western end of Java lies south of the 15-km-wide Pleistocene Danau caldera. The summit contains a nearly 300-m-deep crater open to the ENE with active solfataras on its wall. It is SW across a low saddle from the higher Karang volcano, which was constructed on the SE rim of Danau caldera. (Source: Global Volcanism Program)


The Danau Caldera

Danau volcanic complex 11 September 2021
Danau volcanic complex seen from the West from above the Sunda Strait, 11 September 2021
The lighthouse of Anyer on West JavaFlag of Indonesia with the outer walls of the Danau volcanic complex in the background – 10th September 2021
Danau Caldera Banten Indonesia 2020 aerial
The Danau caldera seen from the West looking East. Its huge!
Looking at the Eastern edge of the Danau caldera, with the northern part of the edge is just visible behind. Mist covers the caldera floor in the background of the Western edge, making most of it not visual. Need to return to the area one day when the weather offer more clarity.
Caldera edge seen from the East, caldera floor is in the background.
Danau caldera seen from the West. Unfortunately a very misty day so most of the caldera is not visible.
Western part of the Caldera.
Big parts of the Caldera floor is today used as farmland, mostly ricefields.
Village on the Western side of the Caldera




Pulosari volcano seen from the Northwest.
The crater of Pulosari display fumarolic activity.
Crater wall of Pulosari.
Volcanic rocks in rice field below the flank of Pulosari.


Aseupan volcano seen from the Southwest. Not much is known about this, likely extinct volcano. It has a complex summit area with many peaks.

Karang Volcano

Karang volcano seen from the North.