After 51 years of no volcanic movement, the CC volcano reawakened on 4 June 2011. The 2011–2012 eruption followed a period of 2 months of elevated seismicity along Center Chile. It was a moderate size eruption (volcanic explosivity index 3–4) with an eruptive center, sometimes called the “We Pillán” vent. The eruption started with a 27 h long Plinian‐style phase, during which the eruption column reached ~14 km above sea level. Vigorous explosive activity continued over the next 7 to 9 days, with an eruptive column oscillating between 3 and 10 km in height. Lava effusion started after about 10 days. According to the daily reports of SERNAGEOMIN, the Chilean Geological Survey and agency in charge of monitoring the eruption, the emission of pyroclastic material ended on 23 April 2012, i.e., 324 days after the start of the eruption. During most of the eruption, the height of the eruption column oscillated between 2 and 8 km (Figure 2a). The eruption emitted several km3 of pyroclastic products, although the exact volume remains poorly constrained due to the lack of a detailed and complete isopach map.