Hydrothermally altered rock within the Kawah Pakuwaja (also spelled Pakuwojo), one of the many craters of the Dieng Plateau, in 1973. The crater is located near summit of Gunung Pakuwaja, one of the larger cones of the Dieng volcanic complex. Kawah Pakuwaja is one of the most active craters at Dieng and has produced several phreatic explosions during historical time.

Photo by Sumarma Hamidi, 1973 (Volcanological Survey of Indonesia).

This image is made available under the Creative Commons BY-NC 4.0 license terms.

Keywords: hydrothermal alteration

Dieng Volcanic Complex