Raung Volcano, East Java, Indonesia
7 July 2009

Note: The area of coverage in this IKONOS image is approximately 3 km x 3 km.
The reduced resolution image on display has undergone compression and so does not represent the true resolution of the original satellite image.

The stratovolcano of Raung is located at the southwestern corner of the Itjen Plateau in east Java. The volcano is high (3332 m) and erupts regularly. It has been active several times already in the twenty-first century. Raung’s two km wide caldera with its steep rim catches the mid-morning sun in the image. Flow and explosive deposits and screes of volcanic material mark the crater rim and the caldera floor. A second crater with a deep volcanic pipe rises asymmetrically from the floor of the caldera. The image shows the edge of a forest approaching the rim of the caldera from below, except on the western and northern side which is bare fresh rock indicating repeated recent eruptions. A number of ravines have developed round the rim, presumably on ash with the larger ones probably on faults. Such large ravines facilitate downslope passage of volcanic material, often derived from rim collapse. A prehistoric transfer of volcanic material from Raung travelled 60 km.