The small, dark grey ash plume from the November 21, 2017 eruption of Agung in Indonesia. Pusdalops PB BPBD Prov Bali. After weeks of unrest that has waxed and waned, Agung in Indonesia finally produced an explosive eruption today. This blast wasn't anything close to the large blast that some media organizations have been claiming, but rather a relatively small eruption (see below) that was driven by water flashing to steam at the summit crater.