Global Volcanism Program | Image GVP-10851
An ash plume rises above Láscar volcano on October 27, 2002, as seen from Pozo Tres, 60 km to the NW. Minor ash eruptions had been observed on 3 occasions at five-minute intervals on October 26, producing plumes that rose about 300 m above the summit crater. On the 27th two explosions were observed; the plume from the 2nd explosion reached at least 1.5 km above the crater.
Photo by Jose Viramonte (Universidad Nacional de Salta, published in Bulletin of the Global Volcanism Network), 2002.